--- a/usbengines/usbotgwatcher/inc/cusbvbusobserver.h	Tue Feb 02 00:52:37 2010 +0200
+++ b/usbengines/usbotgwatcher/inc/cusbvbusobserver.h	Fri Feb 19 23:50:33 2010 +0200
@@ -80,13 +80,13 @@
      * Adds observer to a list
      * @param aObserver observer
      */
-    void SubscribeL(MUsbVBusObserver* aObserver);
+    void SubscribeL(MUsbVBusObserver& aObserver);
 
     /**
      * removes observer from list
      * @param aObserver observer
      */
-    void UnsubscribeL(MUsbVBusObserver* aObserver);
+    void UnsubscribeL(MUsbVBusObserver& aObserver);
 
 private: