diff --git a/src/plugins/madde/maemotoolchain.cpp b/src/plugins/madde/maemotoolchain.cpp
index aff7449fb45f8e45b9c9a9c5f2c4cc686cf6d1cf..1bbdbfac9d1c9dff259bd3dc40be9cbd70bbeea5 100644
--- a/src/plugins/madde/maemotoolchain.cpp
+++ b/src/plugins/madde/maemotoolchain.cpp
@@ -284,7 +284,7 @@ QList<ProjectExplorer::ToolChain *> MaemoToolChainFactory::createToolChainList(c
             target = "Meego";
         mTc->setDisplayName(tr("%1 GCC (%2)").arg(target).arg(MaemoGlobal::maddeRoot(mqv->qmakeCommand().toString())));
         mTc->setCompilerPath(MaemoGlobal::targetRoot(mqv->qmakeCommand().toString()) + QLatin1String("/bin/gcc"));
-        mTc->setDebuggerCommand(ProjectExplorer::ToolChainManager::instance()->defaultDebugger(mqv->qtAbis().at(0)));
+        mTc->setDebuggerCommand(ProjectExplorer::ToolChainManager::instance()->defaultDebugger(mqv->qtAbis().at(0)).toString());
         if (mTc->debuggerCommand().isEmpty())
             mTc->setDebuggerCommand(MaemoGlobal::targetRoot(mqv->qmakeCommand().toString()) + QLatin1String("/bin/gdb"));
         result.append(mTc);
diff --git a/src/plugins/projectexplorer/gcctoolchain.cpp b/src/plugins/projectexplorer/gcctoolchain.cpp
index 102f8e7b167bbde26a9803608ab5cbd5e6486d0a..7111f540648d1d979c498d82408bf88e320eb03e 100644
--- a/src/plugins/projectexplorer/gcctoolchain.cpp
+++ b/src/plugins/projectexplorer/gcctoolchain.cpp
@@ -630,7 +630,7 @@ QList<ToolChain *> Internal::GccToolChainFactory::autoDetectToolchains(const QSt
             return result;
     }
 
-    QString debuggerPath = ToolChainManager::instance()->defaultDebugger(requiredAbi); // Find the first debugger
+    QString debuggerPath = ToolChainManager::instance()->defaultDebugger(requiredAbi).toString(); // Find the first debugger
     if (debuggerPath.isEmpty()) {
         foreach (const QString &debugger, debuggers) {
             debuggerPath = systemEnvironment.searchInPath(debugger);
@@ -753,7 +753,7 @@ void Internal::GccToolChainConfigWidget::handleAbiChange()
 {
     if (m_autoDebuggerCommand == debuggerCommand()) {
         ProjectExplorer::Abi abi = m_abiWidget->currentAbi();
-        m_autoDebuggerCommand = ToolChainManager::instance()->defaultDebugger(abi);
+        m_autoDebuggerCommand = ToolChainManager::instance()->defaultDebugger(abi).toString();
         setDebuggerCommand(m_autoDebuggerCommand);
     }
     emit dirty(toolChain());
@@ -919,7 +919,7 @@ QList<ToolChain *> Internal::MingwToolChainFactory::autoDetect()
     foreach (ToolChain *tc, ToolChainManager::instance()->toolChains()) {
         if (tc->debuggerCommand().isEmpty() && tc->id().startsWith(QLatin1String(Constants::MINGW_TOOLCHAIN_ID)))
             static_cast<MingwToolChain *>(tc)
-                ->setDebuggerCommand(ToolChainManager::instance()->defaultDebugger(tc->targetAbi()));
+                ->setDebuggerCommand(ToolChainManager::instance()->defaultDebugger(tc->targetAbi()).toString());
     }
 
     Abi ha = Abi::hostAbi();
diff --git a/src/plugins/projectexplorer/toolchainmanager.cpp b/src/plugins/projectexplorer/toolchainmanager.cpp
index b5c0cde1348af38fb357bab34a74f0d633a83fd1..544e29d036a498e581e87aacd83cf3f7d2bdffbb 100644
--- a/src/plugins/projectexplorer/toolchainmanager.cpp
+++ b/src/plugins/projectexplorer/toolchainmanager.cpp
@@ -77,7 +77,7 @@ class ToolChainManagerPrivate
 {
 public:
     QList<ToolChain *> m_toolChains;
-    QMap<QString, QString> m_abiToDebugger;
+    QMap<QString, Utils::FileName> m_abiToDebugger;
 };
 
 } // namespace Internal
@@ -181,7 +181,8 @@ void ToolChainManager::restoreToolChains(const QString &fileName, bool autoDetec
         const QString pathKey = QString::fromLatin1(DEFAULT_DEBUGGER_PATH_KEY) + QString::number(i);
         if (!data.contains(pathKey))
             continue;
-        d->m_abiToDebugger.insert(data.value(abiKey).toString(), data.value(pathKey).toString());
+        d->m_abiToDebugger.insert(data.value(abiKey).toString(),
+                                  Utils::FileName::fromString(data.value(pathKey).toString()));
     }
 
     ExtensionSystem::PluginManager *pm = ExtensionSystem::PluginManager::instance();
@@ -239,7 +240,7 @@ ToolChain *ToolChainManager::findToolChain(const QString &id) const
     return 0;
 }
 
-QString ToolChainManager::defaultDebugger(const Abi &abi) const
+Utils::FileName ToolChainManager::defaultDebugger(const Abi &abi) const
 {
     return d->m_abiToDebugger.value(abi.toString());
 }
diff --git a/src/plugins/projectexplorer/toolchainmanager.h b/src/plugins/projectexplorer/toolchainmanager.h
index 0c9e0c026d9d24199578a9853588bb11e0744403..34cb06e0942dd9280ee8bb6f7a4cb2be4fefda8d 100644
--- a/src/plugins/projectexplorer/toolchainmanager.h
+++ b/src/plugins/projectexplorer/toolchainmanager.h
@@ -35,6 +35,8 @@
 
 #include "projectexplorer_export.h"
 
+#include <utils/fileutils.h>
+
 #include <QtCore/QList>
 #include <QtCore/QObject>
 #include <QtCore/QString>
@@ -65,7 +67,7 @@ public:
     QList<ToolChain *> findToolChains(const Abi &abi) const;
     ToolChain *findToolChain(const QString &id) const;
 
-    QString defaultDebugger(const Abi &abi) const;
+    Utils::FileName defaultDebugger(const Abi &abi) const;
 
 public slots:
     bool registerToolChain(ProjectExplorer::ToolChain *tc);
diff --git a/src/plugins/qt4projectmanager/qt-s60/gccetoolchain.cpp b/src/plugins/qt4projectmanager/qt-s60/gccetoolchain.cpp
index f7dc6d3adb2fbcc9ed4887bdde1a3d5591d0f07e..eeab4ad1249f2f23dc694a4e27fe04117ece58ff 100644
--- a/src/plugins/qt4projectmanager/qt-s60/gccetoolchain.cpp
+++ b/src/plugins/qt4projectmanager/qt-s60/gccetoolchain.cpp
@@ -182,7 +182,7 @@ QList<ProjectExplorer::ToolChain *> GcceToolChainFactory::autoDetect()
             GcceToolChain *tc = new GcceToolChain(false);
             tc->setCompilerPath(fi.absoluteFilePath());
             tc->setDisplayName(tr("GCCE from Qt version"));
-            tc->setDebuggerCommand(ProjectExplorer::ToolChainManager::instance()->defaultDebugger(tc->targetAbi()));
+            tc->setDebuggerCommand(ProjectExplorer::ToolChainManager::instance()->defaultDebugger(tc->targetAbi()).toString());
             result.append(tc);
         }
     }
@@ -194,7 +194,7 @@ QList<ProjectExplorer::ToolChain *> GcceToolChainFactory::autoDetect()
         GcceToolChain *tc = new GcceToolChain(true);
         tc->setCompilerPath(fullPath);
         tc->setDisplayName(tr("GCCE (%1)").arg(version));
-        tc->setDebuggerCommand(ProjectExplorer::ToolChainManager::instance()->defaultDebugger(tc->targetAbi()));
+        tc->setDebuggerCommand(ProjectExplorer::ToolChainManager::instance()->defaultDebugger(tc->targetAbi()).toString());
         if (tc->targetAbi() == ProjectExplorer::Abi(ProjectExplorer::Abi::ArmArchitecture,
                                                     ProjectExplorer::Abi::SymbianOS,
                                                     ProjectExplorer::Abi::SymbianDeviceFlavor,
diff --git a/src/plugins/qt4projectmanager/qt-s60/rvcttoolchain.cpp b/src/plugins/qt4projectmanager/qt-s60/rvcttoolchain.cpp
index 9ea44df2a9678c22a453bfd2c7ad41c0ffa7ff24..47a5fd7de4f940037d69ed937d6895307380faaa 100644
--- a/src/plugins/qt4projectmanager/qt-s60/rvcttoolchain.cpp
+++ b/src/plugins/qt4projectmanager/qt-s60/rvcttoolchain.cpp
@@ -554,7 +554,7 @@ QList<ProjectExplorer::ToolChain *> RvctToolChainFactory::autoDetect()
         tc->setDisplayName(name.arg(armVersionString(tc->armVersion()))
                            .arg(v.majorVersion).arg(v.minorVersion).arg(v.build));
         tc->setVersion(v);
-        tc->setDebuggerCommand(ProjectExplorer::ToolChainManager::instance()->defaultDebugger(tc->targetAbi()));
+        tc->setDebuggerCommand(ProjectExplorer::ToolChainManager::instance()->defaultDebugger(tc->targetAbi()).toString());
         result.append(tc);
     }