diff --git a/src/plugins/qt4projectmanager/qt4projectmanager.cpp b/src/plugins/qt4projectmanager/qt4projectmanager.cpp
index a57a903b3fcb67ef3010016003970ce8ffcc7898..5a0c459f3484f9883fff4be4fa29445426fa79f3 100644
--- a/src/plugins/qt4projectmanager/qt4projectmanager.cpp
+++ b/src/plugins/qt4projectmanager/qt4projectmanager.cpp
@@ -201,7 +201,7 @@ void Qt4Manager::updateVariable(const QByteArray &variable)
             return;
         }
         QString value;
-        QtSupport::BaseQtVersion *qtv;
+        const QtSupport::BaseQtVersion *qtv = 0;
         if (Qt4BaseTarget *t = qt4pro->activeTarget()) {
             if (Qt4BuildConfiguration *bc = t->activeQt4BuildConfiguration())
                 qtv = bc->qtVersion();