diff --git a/src/plugins/projectexplorer/project.cpp b/src/plugins/projectexplorer/project.cpp
index bdea6c9ef2b53e1fc166c69a28d2728db0e9f1db..12c47ee454bcf6fd0e197efe9df62cef204a1808 100644
--- a/src/plugins/projectexplorer/project.cpp
+++ b/src/plugins/projectexplorer/project.cpp
@@ -234,6 +234,8 @@ QString Project::projectDirectory() const
 
 QString Project::projectDirectory(const QString &proFile)
 {
+    if (proFile.isEmpty())
+        return QString();
     QFileInfo info(proFile);
     return info.absoluteDir().path();
 }
diff --git a/src/plugins/qt4projectmanager/wizards/targetsetuppage.cpp b/src/plugins/qt4projectmanager/wizards/targetsetuppage.cpp
index 111dea1c0c4b8d14bff9de9a3f75f7df715ef5c2..91872791f90c86b0a5ff9ddb9802b0dadcc34a48 100644
--- a/src/plugins/qt4projectmanager/wizards/targetsetuppage.cpp
+++ b/src/plugins/qt4projectmanager/wizards/targetsetuppage.cpp
@@ -353,7 +353,7 @@ TargetSetupPage::recursivelyCheckDirectoryForBuild(const QString &directory, con
 {
     QList<ImportInfo> results;
 
-    if (maxdepth <= 0)
+    if (maxdepth <= 0 || directory.isEmpty())
         return results;
 
     // Check for in-source builds first: