diff --git a/src/plugins/cppeditor/cppeditorplugin.h b/src/plugins/cppeditor/cppeditorplugin.h
index 1c41e495dc4..318edfc5c3f 100644
--- a/src/plugins/cppeditor/cppeditorplugin.h
+++ b/src/plugins/cppeditor/cppeditorplugin.h
@@ -86,7 +86,7 @@ private slots:
 
 #ifdef WITH_TESTS
 private:
-    QList<QObject *> createTestObjects() const override;
+    QList<QObject *> createTestObjects() const Q_DECL_OVERRIDE;
 
 private slots:
     // The following tests expect that no projects are loaded on start-up.