diff --git a/src/plugins/qt4projectmanager/qt4nodes.cpp b/src/plugins/qt4projectmanager/qt4nodes.cpp
index 672ce8b835b..e67172eb7fb 100644
--- a/src/plugins/qt4projectmanager/qt4nodes.cpp
+++ b/src/plugins/qt4projectmanager/qt4nodes.cpp
@@ -84,7 +84,7 @@ Qt4PriFileNode::Qt4PriFileNode(Qt4Project *project,
         : ProjectNode(filePath),
           m_core(project->qt4ProjectManager()->core()),
           m_project(project),
-          m_projectFilePath(filePath),
+          m_projectFilePath(QDir::fromNativeSeparators(filePath)),
           m_projectDir(QFileInfo(filePath).absolutePath()),
           m_includeFile(0),
           m_saveTimer(new QTimer(this)),