diff --git a/src/plugins/qmldesigner/components/navigator/navigatorwidget.h b/src/plugins/qmldesigner/components/navigator/navigatorwidget.h
index 04207027b40e687b06cffea323cb00a21756a64d..9257a2f0fc75e8502041662a6e334451f219a587 100644
--- a/src/plugins/qmldesigner/components/navigator/navigatorwidget.h
+++ b/src/plugins/qmldesigner/components/navigator/navigatorwidget.h
@@ -40,6 +40,7 @@ class Model;
 
 class NavigatorWidget: public QFrame
 {
+    Q_OBJECT
 public:
     NavigatorWidget(QWidget* parent = 0);
     virtual ~NavigatorWidget();