1 files changed, 2 insertions, 2 deletions
diff --git a/src/plugins/styles/mac/qmacstyle_mac_p_p.h b/src/plugins/styles/mac/qmacstyle_mac_p_p.h
index dd99cf4bb5..6b3f525adc 100644
--- a/src/plugins/styles/mac/qmacstyle_mac_p_p.h
+++ b/src/plugins/styles/mac/qmacstyle_mac_p_p.h
@@ -149,7 +149,6 @@ Q_FORWARD_DECLARE_MUTABLE_CG_TYPE(CGContext);
 
 Q_FORWARD_DECLARE_OBJC_CLASS(NSView);
 Q_FORWARD_DECLARE_OBJC_CLASS(NSCell);
-Q_FORWARD_DECLARE_OBJC_CLASS(QT_MANGLE_NAMESPACE(NotificationReceiver));
 
 QT_BEGIN_NAMESPACE
 
@@ -288,13 +287,14 @@ public:
     static  QVector<QPointer<QObject> > scrollBars;
 
     mutable QPointer<QFocusFrame> focusWidget;
-    QT_MANGLE_NAMESPACE(NotificationReceiver) *receiver;
     mutable NSView *backingStoreNSView;
     mutable QHash<CocoaControl, NSView *> cocoaControls;
     mutable QHash<CocoaControl, NSCell *> cocoaCells;
 
     QFont smallSystemFont;
     QFont miniSystemFont;
+
+    QMacKeyValueObserver appearanceObserver;
 };
 
 QT_END_NAMESPACE