diff --git a/src/plugins/qt4projectmanager/qt4projectmanager.qbs b/src/plugins/qt4projectmanager/qt4projectmanager.qbs
index 1aee5b998bdcc48f1421dffcd446c31925ec005b..3f214bfbdaa8507a4e15f022cc773fc81c43daaa 100644
--- a/src/plugins/qt4projectmanager/qt4projectmanager.qbs
+++ b/src/plugins/qt4projectmanager/qt4projectmanager.qbs
@@ -17,12 +17,6 @@ QtcPlugin {
     Depends { name: "QmlJSTools" }
 
     Depends { name: "cpp" }
-    cpp.defines: base.concat([
-        "PROPARSER_AS_LIBRARY",
-        "PROPARSER_THREAD_SAFE",
-        "PROEVALUATOR_THREAD_SAFE",
-        "PROEVALUATOR_CUMULATIVE"
-    ])
     cpp.includePaths: base.concat([
         "customwidgetwizard",
         "../../shared",
diff --git a/src/plugins/qtsupport/qtsupport.qbs b/src/plugins/qtsupport/qtsupport.qbs
index ef460669f9ee5f6f4517a2aa0fa30772ba41c65d..d38f0c47f6381717e3e49e81d99482f49074ebec 100644
--- a/src/plugins/qtsupport/qtsupport.qbs
+++ b/src/plugins/qtsupport/qtsupport.qbs
@@ -108,6 +108,8 @@ QtcPlugin {
         cpp.includePaths: "../../shared"
         cpp.defines: [
             "QMAKE_AS_LIBRARY",
+            "PROPARSER_THREAD_SAFE",
+            "PROEVALUATOR_CUMULATIVE",
             "PROEVALUATOR_THREAD_SAFE",
             "QMAKE_BUILTIN_PRFS",
             "PROEVALUATOR_SETENV"