diff --git a/src/plugins/qt4projectmanager/qt4project.cpp b/src/plugins/qt4projectmanager/qt4project.cpp
index 2b5d0f707d55229be5db065f05834734ed3d0d3e..9f17ae7bf620e66052bbb16e09a01ba18cb5884c 100644
--- a/src/plugins/qt4projectmanager/qt4project.cpp
+++ b/src/plugins/qt4projectmanager/qt4project.cpp
@@ -960,6 +960,8 @@ Qt4ProFileNode *Qt4Project::rootProjectNode() const
 
 bool Qt4Project::validParse(const QString &proFilePath) const
 {
+    if (!m_rootProjectNode)
+        return false;
     const Qt4ProFileNode *node = m_rootProjectNode->findProFileFor(proFilePath);
     return node && node->validParse();
 }