diff --git a/src/plugins/autotoolsprojectmanager/autotoolsproject.cpp b/src/plugins/autotoolsprojectmanager/autotoolsproject.cpp
index 7c4e610ac171a352d0bcbd1af57fadf323fa5883..4c0573a38aa7a91f035a2fbdbc34e36474009494 100644
--- a/src/plugins/autotoolsprojectmanager/autotoolsproject.cpp
+++ b/src/plugins/autotoolsprojectmanager/autotoolsproject.cpp
@@ -415,7 +415,7 @@ void AutotoolsProject::updateCppCodeModel()
     CppTools::ProjectPart::Ptr part(new CppTools::ProjectPart);
     part->project = this;
     part->displayName = displayName();
-    part->projectFile = projectFilePath();
+    part->projectFile = projectFilePath().toString();
 
     if (activeTarget()) {
         ProjectExplorer::Kit *k = activeTarget()->kit();
diff --git a/src/plugins/classview/classviewparser.cpp b/src/plugins/classview/classviewparser.cpp
index 5bb5d692c9685dc3525a56d6d6bd913feb9dd21f..05ee3c3f2fa219b2aafc10478577566a78083f24 100644
--- a/src/plugins/classview/classviewparser.cpp
+++ b/src/plugins/classview/classviewparser.cpp
@@ -287,7 +287,7 @@ ParserTreeItem::ConstPtr Parser::parse()
         QString prjName(prj->displayName());
         QString prjType(prjName);
         if (prj->document())
-            prjType = prj->projectFilePath();
+            prjType = prj->projectFilePath().toString();
         SymbolInformation inf(prjName, prjType);
 
         QStringList projectList = addProjectNode(item, prj->rootProjectNode());
diff --git a/src/plugins/cmakeprojectmanager/cmakebuildconfiguration.cpp b/src/plugins/cmakeprojectmanager/cmakebuildconfiguration.cpp
index 453a8d534237e8d15d2d4fd154a768ddd191d578..7d84b5eac53f907a03a0421508addf4cbf330aa2 100644
--- a/src/plugins/cmakeprojectmanager/cmakebuildconfiguration.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakebuildconfiguration.cpp
@@ -56,7 +56,7 @@ CMakeBuildConfiguration::CMakeBuildConfiguration(ProjectExplorer::Target *parent
     BuildConfiguration(parent, Core::Id(Constants::CMAKE_BC_ID)), m_useNinja(false)
 {
     CMakeProject *project = static_cast<CMakeProject *>(parent->project());
-    setBuildDirectory(Utils::FileName::fromString(project->shadowBuildDirectory(project->projectFilePath(),
+    setBuildDirectory(Utils::FileName::fromString(project->shadowBuildDirectory(project->projectFilePath().toString(),
                                                                                 parent->kit(),
                                                                                 displayName())));
 }
@@ -169,7 +169,7 @@ ProjectExplorer::BuildConfiguration *CMakeBuildConfigurationFactory::create(Proj
 
     if (copy.buildDirectory.isEmpty())
         copy.buildDirectory
-                = Utils::FileName::fromString(project->shadowBuildDirectory(project->projectFilePath(),
+                = Utils::FileName::fromString(project->shadowBuildDirectory(project->projectFilePath().toString(),
                                                                             parent->kit(),
                                                                             copy.displayName));
 
diff --git a/src/plugins/cmakeprojectmanager/cmakelocatorfilter.cpp b/src/plugins/cmakeprojectmanager/cmakelocatorfilter.cpp
index 6e498b317c7bcc4bf7e2a904e35fceaaf1b379e8..52d78dbb39f5da14946b930108c0ea8f089c0831 100644
--- a/src/plugins/cmakeprojectmanager/cmakelocatorfilter.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakelocatorfilter.cpp
@@ -74,9 +74,8 @@ QList<Core::LocatorFilterEntry> CMakeLocatorFilter::matchesFor(QFutureInterface<
         if (cmakeProject) {
             foreach (const CMakeBuildTarget &ct, cmakeProject->buildTargets()) {
                 if (ct.title.contains(entry)) {
-                    Core::LocatorFilterEntry entry(this, ct.title, cmakeProject->projectFilePath());
-                    entry.extraInfo = FileUtils::shortNativePath(
-                        FileName::fromString(cmakeProject->projectFilePath()));
+                    Core::LocatorFilterEntry entry(this, ct.title, cmakeProject->projectFilePath().toString());
+                    entry.extraInfo = FileUtils::shortNativePath(cmakeProject->projectFilePath());
                     result.append(entry);
                 }
             }
@@ -93,7 +92,7 @@ void CMakeLocatorFilter::accept(Core::LocatorFilterEntry selection) const
 
     foreach (Project *p, SessionManager::projects()) {
         cmakeProject = qobject_cast<CMakeProject *>(p);
-        if (cmakeProject && cmakeProject->projectFilePath() == selection.internalData.toString())
+        if (cmakeProject && cmakeProject->projectFilePath().toString() == selection.internalData.toString())
             break;
         cmakeProject = 0;
     }
diff --git a/src/plugins/cmakeprojectmanager/cmakeproject.cpp b/src/plugins/cmakeprojectmanager/cmakeproject.cpp
index 1035ec84879a0d39f16e53fc249afe77ef50e123..fce0b4767f45464eedd9ddc303c8a59e4d02bfbf 100644
--- a/src/plugins/cmakeprojectmanager/cmakeproject.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakeproject.cpp
@@ -340,7 +340,7 @@ bool CMakeProject::parseCMakeLists()
         CppTools::ProjectPart::Ptr part(new CppTools::ProjectPart);
         part->project = this;
         part->displayName = displayName();
-        part->projectFile = projectFilePath();
+        part->projectFile = projectFilePath().toString();
 
         // This explicitly adds -I. to the include paths
         part->includePaths += projectDirectory();
diff --git a/src/plugins/cppeditor/cppcodemodelinspectordialog.cpp b/src/plugins/cppeditor/cppcodemodelinspectordialog.cpp
index bfc2a2a37eec85562b68e0bb5e70c1692c10c49a..50e94259897236d21211c4b031cec50a0f943ac9 100644
--- a/src/plugins/cppeditor/cppcodemodelinspectordialog.cpp
+++ b/src/plugins/cppeditor/cppcodemodelinspectordialog.cpp
@@ -1612,15 +1612,14 @@ void CppCodeModelInspectorDialog::updateProjectPartData(const ProjectPart::Ptr &
     QString projectFilePath = QLatin1String("<None>");
     if (ProjectExplorer::Project *project = part->project) {
         projectName = project->displayName();
-        projectFilePath = project->projectFilePath();
+        projectFilePath = project->projectFilePath().toUserOutput();
     }
     KeyValueModel::Table table = KeyValueModel::Table()
         << qMakePair(QString::fromLatin1("Project Part Name"), part->displayName)
         << qMakePair(QString::fromLatin1("Project Part File"),
                      QDir::toNativeSeparators(part->projectFile))
         << qMakePair(QString::fromLatin1("Project Name"), projectName)
-        << qMakePair(QString::fromLatin1("Project File"),
-                     QDir::toNativeSeparators(projectFilePath))
+        << qMakePair(QString::fromLatin1("Project File"), projectFilePath)
         << qMakePair(QString::fromLatin1("C Version"),
                      CMI::Utils::toString(part->cVersion))
         << qMakePair(QString::fromLatin1("CXX Version"),
diff --git a/src/plugins/cpptools/cppcodemodelinspectordumper.cpp b/src/plugins/cpptools/cppcodemodelinspectordumper.cpp
index e6328d60d923b1e5da24bfd735703ae4ee9e2df9..2aef1c21cf678499ac979a88b4ca9803c55ddc98 100644
--- a/src/plugins/cpptools/cppcodemodelinspectordumper.cpp
+++ b/src/plugins/cpptools/cppcodemodelinspectordumper.cpp
@@ -467,8 +467,8 @@ void Dumper::dumpProjectInfos( const QList<CppModelManagerInterface::ProjectInfo
     m_out << "Projects loaded: " << projectInfos.size() << "{{{1\n";
     foreach (const CppModelManagerInterface::ProjectInfo &info, projectInfos) {
         const QPointer<ProjectExplorer::Project> project = info.project();
-        m_out << i1 << "Project " << project->displayName() << " (" << project->projectFilePath()
-              << "){{{2\n";
+        m_out << i1 << "Project " << project->displayName()
+              << " (" << project->projectFilePath().toUserOutput() << "){{{2\n";
 
         const QList<ProjectPart::Ptr> projectParts = info.projectParts();
         foreach (const ProjectPart::Ptr &part, projectParts) {
@@ -476,7 +476,7 @@ void Dumper::dumpProjectInfos( const QList<CppModelManagerInterface::ProjectInfo
             QString projectFilePath = QLatin1String("<None>");
             if (ProjectExplorer::Project *project = part->project) {
                 projectName = project->displayName();
-                projectFilePath = project->projectFilePath();
+                projectFilePath = project->projectFilePath().toUserOutput();
             }
             if (!part->projectConfigFile.isEmpty())
                 m_out << i3 << "Project Config File: " << part->projectConfigFile << "\n";
diff --git a/src/plugins/debugger/debuggerplugin.cpp b/src/plugins/debugger/debuggerplugin.cpp
index 9ad46ba498d8ce3fc95b2cb94010428a4e7a52d1..b42a8f9521d0aec020258ebc3d22815b4074dfa8 100644
--- a/src/plugins/debugger/debuggerplugin.cpp
+++ b/src/plugins/debugger/debuggerplugin.cpp
@@ -3526,7 +3526,7 @@ void DebuggerPluginPrivate::testProjectLoaded(Project *project)
 
 void DebuggerPluginPrivate::testProjectEvaluated()
 {
-    QString fileName = m_testProject->projectFilePath();
+    QString fileName = m_testProject->projectFilePath().toUserOutput();
     QVERIFY(!fileName.isEmpty());
     qWarning("Project %s loaded", qPrintable(fileName));
     connect(BuildManager::instance(), SIGNAL(buildQueueFinished(bool)),
diff --git a/src/plugins/genericprojectmanager/genericproject.cpp b/src/plugins/genericprojectmanager/genericproject.cpp
index 38227328d4109e0742761eee5b77d8a026490e50..3272ae7a0313d2f076dc31d73adcaff7a534f7ee 100644
--- a/src/plugins/genericprojectmanager/genericproject.cpp
+++ b/src/plugins/genericprojectmanager/genericproject.cpp
@@ -244,7 +244,7 @@ void GenericProject::refresh(RefreshOptions options)
         CppTools::ProjectPart::Ptr part(new CppTools::ProjectPart);
         part->project = this;
         part->displayName = displayName();
-        part->projectFile = projectFilePath();
+        part->projectFile = projectFilePath().toString();
 
         part->includePaths += projectIncludePaths();
 
diff --git a/src/plugins/genericprojectmanager/genericprojectplugin.cpp b/src/plugins/genericprojectmanager/genericprojectplugin.cpp
index 65557e026d57e49224a616a663243fec878fc245..3e214eb65d905c332f685dd4a07ee010e48d9845 100644
--- a/src/plugins/genericprojectmanager/genericprojectplugin.cpp
+++ b/src/plugins/genericprojectmanager/genericprojectplugin.cpp
@@ -110,7 +110,7 @@ void GenericProjectPlugin::updateContextMenu(ProjectExplorer::Project *project,
 void GenericProjectPlugin::editFiles()
 {
     GenericProject *genericProject = static_cast<GenericProject *>(m_contextMenuProject);
-    ProjectExplorer::SelectableFilesDialogEditFiles sfd(QFileInfo(genericProject->projectFilePath()).path(), genericProject->files(),
+    ProjectExplorer::SelectableFilesDialogEditFiles sfd(genericProject->projectFilePath().toFileInfo().path(), genericProject->files(),
                               Core::ICore::mainWindow());
     if (sfd.exec() == QDialog::Accepted)
         genericProject->setFiles(sfd.selectedFiles());
diff --git a/src/plugins/projectexplorer/currentprojectfind.cpp b/src/plugins/projectexplorer/currentprojectfind.cpp
index 703e9afd8a74f2cb217f64d1d381e94568b34ecd..316ce8afa9c2cf788cbec9df9e2b8be4f0712625 100644
--- a/src/plugins/projectexplorer/currentprojectfind.cpp
+++ b/src/plugins/projectexplorer/currentprojectfind.cpp
@@ -83,7 +83,7 @@ Utils::FileIterator *CurrentProjectFind::files(const QStringList &nameFilters,
                return new Utils::FileIterator(QStringList(), QList<QTextCodec *>()));
     QString projectFile = additionalParameters.toString();
     foreach (Project *project, SessionManager::projects()) {
-        if (project->document() && projectFile == project->projectFilePath())
+        if (project->document() && projectFile == project->projectFilePath().toString())
             return filesForProjects(nameFilters, QList<Project *>() << project);
     }
     return new Utils::FileIterator(QStringList(), QList<QTextCodec *>());
@@ -107,7 +107,7 @@ void CurrentProjectFind::recheckEnabled()
         return;
     QString projectFile = getAdditionalParameters(search).toString();
     foreach (Project *project, SessionManager::projects()) {
-        if (projectFile == project->projectFilePath()) {
+        if (projectFile == project->projectFilePath().toString()) {
             search->setSearchAgainEnabled(true);
             return;
         }
diff --git a/src/plugins/projectexplorer/dependenciespanel.cpp b/src/plugins/projectexplorer/dependenciespanel.cpp
index c10e66f7479e4fcc9c46df911ca550a2897686de..d07807706fd3a9a9287f2bd2bf905c1df82113ac 100644
--- a/src/plugins/projectexplorer/dependenciespanel.cpp
+++ b/src/plugins/projectexplorer/dependenciespanel.cpp
@@ -98,7 +98,7 @@ QVariant DependenciesModel::data(const QModelIndex &index, int role) const
     case Qt::CheckStateRole:
         return SessionManager::hasDependency(m_project, p) ? Qt::Checked : Qt::Unchecked;
     case Qt::DecorationRole:
-        return Core::FileIconProvider::icon(p->projectFilePath());
+        return Core::FileIconProvider::icon(p->projectFilePath().toString());
     default:
         return QVariant();
     }
diff --git a/src/plugins/projectexplorer/miniprojecttargetselector.cpp b/src/plugins/projectexplorer/miniprojecttargetselector.cpp
index 269290f11fd61bb9308426dcde253aff060f3300..7d864413dc40913b80b430bf8d3fe579bdf82a72 100644
--- a/src/plugins/projectexplorer/miniprojecttargetselector.cpp
+++ b/src/plugins/projectexplorer/miniprojecttargetselector.cpp
@@ -261,7 +261,7 @@ QListWidgetItem *ProjectListWidget::itemForProject(Project *project)
 
 QString ProjectListWidget::fullName(ProjectExplorer::Project *project)
 {
-    return tr("%1 (%2)").arg(project->displayName(), project->projectFilePath());
+    return tr("%1 (%2)").arg(project->displayName(), project->projectFilePath().toUserOutput());
 }
 
 void ProjectListWidget::addProject(Project *project)
@@ -1512,7 +1512,7 @@ void MiniProjectTargetSelector::updateActionAndSummary()
         projectName = project->displayName();
         foreach (Project *p, SessionManager::projects()) {
             if (p != project && p->displayName() == projectName) {
-                fileName = project->projectFilePath();
+                fileName = project->projectFilePath().toUserOutput();
                 break;
             }
         }
diff --git a/src/plugins/projectexplorer/project.cpp b/src/plugins/projectexplorer/project.cpp
index d96a35624b80804ff7b387357ce60f22eb4fc71a..3348b45ae22f3b2454fd700526630904655686de 100644
--- a/src/plugins/projectexplorer/project.cpp
+++ b/src/plugins/projectexplorer/project.cpp
@@ -120,9 +120,9 @@ Core::Id Project::id() const
     return d->m_id;
 }
 
-QString Project::projectFilePath() const
+Utils::FileName Project::projectFilePath() const
 {
-    return document()->filePath();
+    return Utils::FileName::fromString(document()->filePath());
 }
 
 bool Project::hasActiveBuildSettings() const
diff --git a/src/plugins/projectexplorer/project.h b/src/plugins/projectexplorer/project.h
index cc041e183d16bf68b314971ec30b6f0cdc14c6b4..4a33c12ed44f914ceec2f3138fc2740a9cc8a899 100644
--- a/src/plugins/projectexplorer/project.h
+++ b/src/plugins/projectexplorer/project.h
@@ -34,6 +34,8 @@
 
 #include <coreplugin/id.h>
 
+#include <utils/fileutils.h>
+
 #include <QObject>
 #include <QFileSystemModel>
 
@@ -77,7 +79,7 @@ public:
     virtual Core::IDocument *document() const = 0;
     virtual IProjectManager *projectManager() const = 0;
 
-    QString projectFilePath() const;
+    Utils::FileName projectFilePath() const;
 
     bool hasActiveBuildSettings() const;
 
diff --git a/src/plugins/projectexplorer/projectexplorer.cpp b/src/plugins/projectexplorer/projectexplorer.cpp
index 4f9d597840c50e68e5d906458ef31e3452a2e4dc..03356fc87e73774793410e99fbae2ee63921721b 100644
--- a/src/plugins/projectexplorer/projectexplorer.cpp
+++ b/src/plugins/projectexplorer/projectexplorer.cpp
@@ -1381,7 +1381,7 @@ QList<Project *> ProjectExplorerPlugin::openProjects(const QStringList &fileName
             filePath = fi.canonicalFilePath();
         bool found = false;
         foreach (Project *pi, SessionManager::projects()) {
-            if (filePath == pi->projectFilePath()) {
+            if (filePath == pi->projectFilePath().toString()) {
                 found = true;
                 break;
             }
@@ -2370,7 +2370,7 @@ void ProjectExplorerPlugin::projectRemoved(ProjectExplorer::Project * pro)
 
 void ProjectExplorerPlugin::projectDisplayNameChanged(Project *pro)
 {
-    addToRecentProjects(pro->projectFilePath(), pro->displayName());
+    addToRecentProjects(pro->projectFilePath().toString(), pro->displayName());
     updateActions();
 }
 
diff --git a/src/plugins/projectexplorer/projectwindow.cpp b/src/plugins/projectexplorer/projectwindow.cpp
index 60b5ee8e9cc4ed0534dca3476eeba33265800264..2b16031030d1f5227593a257f77de68676ac5f1b 100644
--- a/src/plugins/projectexplorer/projectwindow.cpp
+++ b/src/plugins/projectexplorer/projectwindow.cpp
@@ -347,7 +347,7 @@ void ProjectWindow::registerProject(ProjectExplorer::Project *project)
     }
 
     m_tabIndexToProject.insert(index, project);
-    m_tabWidget->insertTab(index, project->displayName(), project->projectFilePath(), subtabs);
+    m_tabWidget->insertTab(index, project->displayName(), project->projectFilePath().toString(), subtabs);
 
     connect(project, SIGNAL(removedTarget(ProjectExplorer::Target*)),
             this, SLOT(removedTarget(ProjectExplorer::Target*)));
diff --git a/src/plugins/projectexplorer/session.cpp b/src/plugins/projectexplorer/session.cpp
index 5e2764f4615a058140b7bca59d20d1978474ab54..b882f1779cbf99570dee430cf0fd80589ddc3419 100644
--- a/src/plugins/projectexplorer/session.cpp
+++ b/src/plugins/projectexplorer/session.cpp
@@ -200,7 +200,7 @@ bool SessionManagerPrivate::recursiveDependencyCheck(const QString &newDep, cons
 
 QList<Project *> SessionManager::dependencies(const Project *project)
 {
-    const QString proName = project->projectFilePath();
+    const QString proName = project->projectFilePath().toString();
     const QStringList proDeps = d->m_depMap.value(proName);
 
     QList<Project *> projects;
@@ -214,8 +214,8 @@ QList<Project *> SessionManager::dependencies(const Project *project)
 
 bool SessionManager::hasDependency(const Project *project, const Project *depProject)
 {
-    const QString proName = project->projectFilePath();
-    const QString depName = depProject->projectFilePath();
+    const QString proName = project->projectFilePath().toString();
+    const QString depName = depProject->projectFilePath().toString();
 
     const QStringList proDeps = d->m_depMap.value(proName);
     return proDeps.contains(depName);
@@ -223,16 +223,16 @@ bool SessionManager::hasDependency(const Project *project, const Project *depPro
 
 bool SessionManager::canAddDependency(const Project *project, const Project *depProject)
 {
-    const QString newDep = project->projectFilePath();
-    const QString checkDep = depProject->projectFilePath();
+    const QString newDep = project->projectFilePath().toString();
+    const QString checkDep = depProject->projectFilePath().toString();
 
     return d->recursiveDependencyCheck(newDep, checkDep);
 }
 
 bool SessionManager::addDependency(Project *project, Project *depProject)
 {
-    const QString proName = project->projectFilePath();
-    const QString depName = depProject->projectFilePath();
+    const QString proName = project->projectFilePath().toString();
+    const QString depName = depProject->projectFilePath().toString();
 
     // check if this dependency is valid
     if (!d->recursiveDependencyCheck(proName, depName))
@@ -250,8 +250,8 @@ bool SessionManager::addDependency(Project *project, Project *depProject)
 
 void SessionManager::removeDependency(Project *project, Project *depProject)
 {
-    const QString proName = project->projectFilePath();
-    const QString depName = depProject->projectFilePath();
+    const QString proName = project->projectFilePath().toString();
+    const QString depName = depProject->projectFilePath().toString();
 
     QStringList proDeps = d->m_depMap.value(proName);
     proDeps.removeAll(depName);
@@ -347,7 +347,7 @@ bool SessionManager::save()
     QVariantMap data;
     // save the startup project
     if (d->m_startupProject)
-        data.insert(QLatin1String("StartupProject"), d->m_startupProject->projectFilePath());
+        data.insert(QLatin1String("StartupProject"), d->m_startupProject->projectFilePath().toString());
 
     QColor c = StyleHelper::requestedBaseColor();
     if (c.isValid()) {
@@ -360,7 +360,7 @@ bool SessionManager::save()
 
     QStringList projectFiles;
     foreach (Project *pro, d->m_projects)
-        projectFiles << pro->projectFilePath();
+        projectFiles << pro->projectFilePath().toString();
 
     // Restore infromation on projects that failed to load:
     // don't readd projects to the list, which the user loaded
@@ -449,7 +449,7 @@ QStringList SessionManagerPrivate::dependenciesOrder() const
 
     // copy the map to a temporary list
     foreach (Project *pro, m_projects) {
-        const QString &proName = pro->projectFilePath();
+        const QString &proName = pro->projectFilePath().toString();
         unordered << QPair<QString, QStringList>(proName, m_depMap.value(proName));
     }
 
@@ -481,13 +481,13 @@ QList<Project *> SessionManager::projectOrder(Project *project)
 
     QStringList pros;
     if (project)
-        pros = d->dependencies(project->projectFilePath());
+        pros = d->dependencies(project->projectFilePath().toString());
     else
         pros = d->dependenciesOrder();
 
     foreach (const QString &proFile, pros) {
         foreach (Project *pro, projects()) {
-            if (pro->projectFilePath() == proFile) {
+            if (pro->projectFilePath().toString() == proFile) {
                 result << pro;
                 break;
             }
@@ -605,7 +605,7 @@ void SessionManager::removeProjects(QList<Project *> remove)
     QSet<QString> projectFiles;
     foreach (Project *pro, projects()) {
         if (!remove.contains(pro))
-            projectFiles.insert(pro->projectFilePath());
+            projectFiles.insert(pro->projectFilePath().toString());
     }
 
     QSet<QString>::const_iterator i = projectFiles.begin();
@@ -807,7 +807,7 @@ void SessionManagerPrivate::restoreStartupProject(const PersistentSettingsReader
     const QString startupProject = reader.restoreValue(QLatin1String("StartupProject")).toString();
     if (!startupProject.isEmpty()) {
         foreach (Project *pro, d->m_projects) {
-            if (QDir::cleanPath(pro->projectFilePath()) == startupProject) {
+            if (pro->projectFilePath().toString() == startupProject) {
                 m_instance->setStartupProject(pro);
                 break;
             }
@@ -844,7 +844,7 @@ void SessionManagerPrivate::restoreProjects(const QStringList &fileList)
         if (!errors.isEmpty())
             QMessageBox::critical(Core::ICore::mainWindow(), SessionManager::tr("Failed to open project"), errors);
         foreach (Project *p, projects)
-            m_failedProjects.removeAll(p->projectFilePath());
+            m_failedProjects.removeAll(p->projectFilePath().toString());
     }
 }
 
diff --git a/src/plugins/projectexplorer/settingsaccessor.cpp b/src/plugins/projectexplorer/settingsaccessor.cpp
index aa5ea4d0498f8d9c87e9f195fb0067658aa40b86..56de60867bc8be7d5df275d895b1810d0d4b70b9 100644
--- a/src/plugins/projectexplorer/settingsaccessor.cpp
+++ b/src/plugins/projectexplorer/settingsaccessor.cpp
@@ -736,7 +736,7 @@ QByteArray SettingsAccessor::creatorId()
 
 QString SettingsAccessor::defaultFileName(const QString &suffix) const
 {
-    return project()->projectFilePath() + suffix;
+    return project()->projectFilePath().toString() + suffix;
 }
 
 int SettingsAccessor::currentVersion() const
@@ -836,7 +836,7 @@ QVariantMap SettingsAccessor::readUserSettings(QWidget *parent) const
 QVariantMap SettingsAccessor::readSharedSettings(QWidget *parent) const
 {
     SettingsAccessorPrivate::Settings sharedSettings;
-    QString fn = project()->projectFilePath() + m_sharedSuffix;
+    QString fn = project()->projectFilePath().toString() + m_sharedSuffix;
     sharedSettings.path = FileName::fromString(fn);
     sharedSettings.map = readFile(sharedSettings.path);
 
diff --git a/src/plugins/projectexplorer/target.cpp b/src/plugins/projectexplorer/target.cpp
index d04a58b993856122cdb396ecd47b2beb567f3471..df8d0689050159eb2cbf12e9ba7660093f1d49d6 100644
--- a/src/plugins/projectexplorer/target.cpp
+++ b/src/plugins/projectexplorer/target.cpp
@@ -530,7 +530,7 @@ void Target::updateDefaultBuildConfigurations()
         qWarning("No build configuration factory found for target id '%s'.", qPrintable(id().toString()));
         return;
     }
-    QList<BuildInfo *> infoList = bcFactory->availableSetups(this->kit(), project()->projectFilePath());
+    QList<BuildInfo *> infoList = bcFactory->availableSetups(this->kit(), project()->projectFilePath().toString());
     foreach (BuildInfo *info, infoList) {
         BuildConfiguration *bc = bcFactory->create(this, info);
         if (!bc)
diff --git a/src/plugins/projectexplorer/unconfiguredprojectpanel.cpp b/src/plugins/projectexplorer/unconfiguredprojectpanel.cpp
index be12ed573f8e89e34c1f7c6428148f4d788009e9..345110e4272f25df025f2a1c978c7322a6997e6c 100644
--- a/src/plugins/projectexplorer/unconfiguredprojectpanel.cpp
+++ b/src/plugins/projectexplorer/unconfiguredprojectpanel.cpp
@@ -97,7 +97,7 @@ TargetSetupPageWrapper::TargetSetupPageWrapper(Project *project) :
     m_targetSetupPage = new TargetSetupPage(this);
     m_targetSetupPage->setProjectImporter(project->createProjectImporter());
     m_targetSetupPage->setUseScrollArea(false);
-    m_targetSetupPage->setProjectPath(project->projectFilePath());
+    m_targetSetupPage->setProjectPath(project->projectFilePath().toString());
     m_targetSetupPage->setRequiredKitMatcher(project->createRequiredKitMatcher());
     m_targetSetupPage->setPreferredKitMatcher(project->createPreferredKitMatcher());
     m_targetSetupPage->initializePage();
diff --git a/src/plugins/qbsprojectmanager/qbsnodes.cpp b/src/plugins/qbsprojectmanager/qbsnodes.cpp
index 4aaf25bd831421df76e262e65eae38f0fa5bb319..57976cac1169276274cd45aa16830306a5317751 100644
--- a/src/plugins/qbsprojectmanager/qbsnodes.cpp
+++ b/src/plugins/qbsprojectmanager/qbsnodes.cpp
@@ -577,7 +577,7 @@ QbsGroupNode *QbsProductNode::findGroupNode(const QString &name)
 // --------------------------------------------------------------------
 
 QbsProjectNode::QbsProjectNode(QbsProject *project) :
-    QbsBaseProjectNode(project->projectFilePath()),
+    QbsBaseProjectNode(project->projectFilePath().toString()),
     m_project(project)
 {
     ctor();
diff --git a/src/plugins/qmakeprojectmanager/qmakebuildconfiguration.cpp b/src/plugins/qmakeprojectmanager/qmakebuildconfiguration.cpp
index 7c3a0f807a8b232f9ff8bf5ba9ce2f942a4589e9..00dcc075499b134ff27058c4c155a36770ca6cbf 100644
--- a/src/plugins/qmakeprojectmanager/qmakebuildconfiguration.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakebuildconfiguration.cpp
@@ -199,8 +199,8 @@ NamedWidget *QmakeBuildConfiguration::createConfigWidget()
 QString QmakeBuildConfiguration::defaultShadowBuildDirectory() const
 {
     // todo displayName isn't ideal
-    return QmakeProject::shadowBuildDirectory(target()->project()->projectFilePath(),
-                                            target()->kit(), displayName());
+    return QmakeProject::shadowBuildDirectory(target()->project()->projectFilePath().toString(),
+                                              target()->kit(), displayName());
 }
 
 bool QmakeBuildConfiguration::supportsShadowBuilds()
@@ -341,7 +341,7 @@ QmakeBuildConfiguration::MakefileState QmakeBuildConfiguration::compareToImportF
         BaseQtVersion *version = QtKitInformation::qtVersion(target()->kit());
         if (!version)
             return MakefileForWrongProject;
-        if (QtSupport::QtVersionManager::makefileIsFor(makefile, qs->project()->projectFilePath())
+        if (QtSupport::QtVersionManager::makefileIsFor(makefile, qs->project()->projectFilePath().toString())
                 != QtSupport::QtVersionManager::SameProject) {
             if (debug) {
                 qDebug() << "different profile used to generate the Makefile:"
@@ -591,7 +591,7 @@ int QmakeBuildConfigurationFactory::priority(const Target *parent) const
 QList<BuildInfo *> QmakeBuildConfigurationFactory::availableBuilds(const Target *parent) const
 {
     QList<ProjectExplorer::BuildInfo *> result;
-    QmakeBuildInfo *info = createBuildInfo(parent->kit(), parent->project()->projectFilePath(),
+    QmakeBuildInfo *info = createBuildInfo(parent->kit(), parent->project()->projectFilePath().toString(),
                                            BuildConfiguration::Debug);
     info->displayName.clear(); // ask for a name
     info->buildDirectory.clear(); // This depends on the displayName
@@ -666,7 +666,7 @@ BuildConfiguration *QmakeBuildConfigurationFactory::create(Target *parent, const
     Utils::FileName directory = qmakeInfo->buildDirectory;
     if (directory.isEmpty()) {
         directory = defaultBuildDirectory(qmakeInfo->supportsShadowBuild,
-                                          parent->project()->projectFilePath(),
+                                          parent->project()->projectFilePath().toString(),
                                           parent->kit(), info->displayName);
     }
 
diff --git a/src/plugins/qmakeprojectmanager/qmakeproject.cpp b/src/plugins/qmakeprojectmanager/qmakeproject.cpp
index ef289a75dec06f4ec9de0b02d76b345edc2c5fc8..00cbe611aabf056902367a5f6d4591de8a1de21f 100644
--- a/src/plugins/qmakeprojectmanager/qmakeproject.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakeproject.cpp
@@ -891,7 +891,7 @@ bool QmakeProject::supportsKit(Kit *k, QString *errorMessage) const
 
 QString QmakeProject::displayName() const
 {
-    return QFileInfo(projectFilePath()).completeBaseName();
+    return projectFilePath().toFileInfo().completeBaseName();
 }
 
 Core::IDocument *QmakeProject::document() const
@@ -1394,10 +1394,10 @@ void QmakeProject::configureAsExampleProject(const QStringList &platforms)
         if (!platforms.isEmpty() && !platforms.contains(version->platformName()))
             continue;
 
-        IBuildConfigurationFactory *factory = IBuildConfigurationFactory::find(k, projectFilePath());
+        IBuildConfigurationFactory *factory = IBuildConfigurationFactory::find(k, projectFilePath().toString());
         if (!factory)
             continue;
-        foreach (BuildInfo *info, factory->availableSetups(k, projectFilePath()))
+        foreach (BuildInfo *info, factory->availableSetups(k, projectFilePath().toString()))
             infoList << info;
     }
     setup(infoList);
@@ -1648,7 +1648,7 @@ void QmakeProject::emitBuildDirectoryInitialized()
 
 ProjectImporter *QmakeProject::createProjectImporter() const
 {
-    return new QmakeProjectImporter(projectFilePath());
+    return new QmakeProjectImporter(projectFilePath().toString());
 }
 
 KitMatcher *QmakeProject::createRequiredKitMatcher() const
diff --git a/src/plugins/qmakeprojectmanager/qmakeprojectconfigwidget.cpp b/src/plugins/qmakeprojectmanager/qmakeprojectconfigwidget.cpp
index 24373da5e13119001c5e7566740f03204045897d..6eace76dbf105944d5a5535062930ee515b55233 100644
--- a/src/plugins/qmakeprojectmanager/qmakeprojectconfigwidget.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakeprojectconfigwidget.cpp
@@ -49,7 +49,7 @@ QmakeProjectConfigWidget::QmakeProjectConfigWidget(QmakeBuildConfiguration *bc)
       m_ignoreChange(false)
 {
     m_defaultShadowBuildDir
-            = QmakeProject::shadowBuildDirectory(bc->target()->project()->projectFilePath(),
+            = QmakeProject::shadowBuildDirectory(bc->target()->project()->projectFilePath().toString(),
                                                bc->target()->kit(),
                                                Utils::FileUtils::qmakeFriendlyName(bc->displayName()));
 
@@ -193,7 +193,7 @@ void QmakeProjectConfigWidget::updateProblemLabel()
 {
     m_ui->shadowBuildDirEdit->triggerChanged();
     ProjectExplorer::Kit *k = m_buildConfiguration->target()->kit();
-    const QString proFileName = m_buildConfiguration->target()->project()->projectFilePath();
+    const QString proFileName = m_buildConfiguration->target()->project()->projectFilePath().toString();
 
     // Check for Qt version:
     QtSupport::BaseQtVersion *version = QtSupport::QtKitInformation::qtVersion(k);
diff --git a/src/plugins/qmakeprojectmanager/qmakestep.cpp b/src/plugins/qmakeprojectmanager/qmakestep.cpp
index dba95dc60e444f88430fad225d335c62f41acbe2..d75f0e7aa9e087afd1fe2dd5a180528ff077024c 100644
--- a/src/plugins/qmakeprojectmanager/qmakestep.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakestep.cpp
@@ -123,9 +123,9 @@ QString QMakeStep::allArguments(bool shorted)
     if (bc->subNodeBuild())
         arguments << QDir::toNativeSeparators(bc->subNodeBuild()->path());
     else if (shorted)
-        arguments << QDir::toNativeSeparators(QFileInfo(project()->projectFilePath()).fileName());
+        arguments << project()->projectFilePath().toFileInfo().fileName();
     else
-        arguments << QDir::toNativeSeparators(project()->projectFilePath());
+        arguments << project()->projectFilePath().toUserOutput();
 
     arguments << QLatin1String("-r");
     bool userProvidedMkspec = false;
diff --git a/src/plugins/qmlprojectmanager/qmlproject.cpp b/src/plugins/qmlprojectmanager/qmlproject.cpp
index 03e732513aec36426457e20ab16829a8f83777c0..5acffaf8b33bafe5de067428d2e7868ad7cdb04e 100644
--- a/src/plugins/qmlprojectmanager/qmlproject.cpp
+++ b/src/plugins/qmlprojectmanager/qmlproject.cpp
@@ -173,7 +173,7 @@ void QmlProject::addedRunConfiguration(ProjectExplorer::RunConfiguration *rc)
 
 QDir QmlProject::projectDir() const
 {
-    return QFileInfo(projectFilePath()).dir();
+    return projectFilePath().toFileInfo().dir();
 }
 
 QString QmlProject::filesFileName() const
diff --git a/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.cpp b/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.cpp
index eceab59ca2da767e14249aedbc3a9da22ca8a370..498ab8d4d2ba6d8597bbd48d585118b5ccedb1ef 100644
--- a/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.cpp
+++ b/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.cpp
@@ -141,8 +141,7 @@ QString QmlProjectRunConfiguration::commandLineArguments() const
 
 QString QmlProjectRunConfiguration::workingDirectory() const
 {
-    QFileInfo projectFile(target()->project()->projectFilePath());
-    return canonicalCapsPath(projectFile.absolutePath());
+    return canonicalCapsPath(target()->project()->projectFilePath().toFileInfo().absolutePath());
 }
 
 /* QtDeclarative checks explicitly that the capitalization for any URL / path
diff --git a/src/plugins/qnx/bardescriptorfilenodemanager.cpp b/src/plugins/qnx/bardescriptorfilenodemanager.cpp
index 664a05fd98c7706c87b5e1fb9833b98e024f9176..7ad83c88b0bf35585d610caf0a32db2979b461c3 100644
--- a/src/plugins/qnx/bardescriptorfilenodemanager.cpp
+++ b/src/plugins/qnx/bardescriptorfilenodemanager.cpp
@@ -191,7 +191,7 @@ bool BarDescriptorFileNodeManager::createBarDescriptor(ProjectExplorer::Project
                                                 tr("Setup Application Descriptor File"),
                                                 tr("You need to set up a bar descriptor file to enable "
                                                    "packaging.\nDo you want Qt Creator to generate it for your project (%1)?")
-                                                .arg(project->projectFilePath()),
+                                                .arg(project->projectFilePath().toUserOutput()),
                                                 tr("Don't ask again for this project"), &skipFileCreation);
 
     if (button != QDialogButtonBox::Yes) {
diff --git a/src/plugins/winrt/winrtpackagedeploymentstep.cpp b/src/plugins/winrt/winrtpackagedeploymentstep.cpp
index 71a53155d391185e9424f18c3232d58f33ef0332..56f5a578c4d99f0c7eae8f24999336d0968c069e 100644
--- a/src/plugins/winrt/winrtpackagedeploymentstep.cpp
+++ b/src/plugins/winrt/winrtpackagedeploymentstep.cpp
@@ -59,7 +59,7 @@ WinRtPackageDeploymentStep::WinRtPackageDeploymentStep(BuildStepList *bsl)
 
 bool WinRtPackageDeploymentStep::init()
 {
-    Utils::FileName proFile = Utils::FileName::fromString(project()->projectFilePath());
+    Utils::FileName proFile = project()->projectFilePath();
     const QString targetPath
             = target()->applicationTargets().targetForProject(proFile).toString()
                 + QLatin1String(".exe");
@@ -115,7 +115,7 @@ bool WinRtPackageDeploymentStep::init()
 bool WinRtPackageDeploymentStep::processSucceeded(int exitCode, QProcess::ExitStatus status)
 {
     if (m_createMappingFile) {
-        Utils::FileName proFile = Utils::FileName::fromString(project()->projectFilePath());
+        Utils::FileName proFile = project()->projectFilePath();
         QString targetPath
                 = target()->applicationTargets().targetForProject(proFile).toString();
         QString targetDir = targetPath.left(targetPath.lastIndexOf(QLatin1Char('/')) + 1);