diff --git a/src/plugins/qt4projectmanager/qmakestep.cpp b/src/plugins/qt4projectmanager/qmakestep.cpp
index aae920c7fb61753cd792faf8e15a0bbe41f7df22..b4f2a0730d0d7729c578a962844a967471df376c 100644
--- a/src/plugins/qt4projectmanager/qmakestep.cpp
+++ b/src/plugins/qt4projectmanager/qmakestep.cpp
@@ -64,7 +64,7 @@ QStringList QMakeStep::arguments(const QString &buildConfiguration)
     arguments << project()->file()->fileName();
     arguments << "-r";
 
-    if (!arguments.contains("-spec"))
+    if (!additonalArguments.contains("-spec"))
         arguments << "-spec" << "default";
 
 #ifdef Q_OS_WIN