diff --git a/src/plugins/qmakeprojectmanager/qmakenodes.cpp b/src/plugins/qmakeprojectmanager/qmakenodes.cpp
index 76ac873a609..5ea08b762ce 100644
--- a/src/plugins/qmakeprojectmanager/qmakenodes.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakenodes.cpp
@@ -1135,7 +1135,7 @@ bool QmakePriFileNode::ensureWriteableProFile(const QString &file)
     if (!fi.isWritable()) {
         // Try via vcs manager
         Core::IVersionControl *versionControl = Core::VcsManager::findVersionControlForDirectory(fi.absolutePath());
-        if (!versionControl || versionControl->vcsOpen(file)) {
+        if (!versionControl || !versionControl->vcsOpen(file)) {
             bool makeWritable = QFile::setPermissions(file, fi.permissions() | QFile::WriteUser);
             if (!makeWritable) {
                 QMessageBox::warning(Core::ICore::mainWindow(),