--- a/usbengines/usbotgwatcher/inc/cusbbusactivityobserver.h	Tue Feb 02 00:52:37 2010 +0200
+++ b/usbengines/usbotgwatcher/inc/cusbbusactivityobserver.h	Fri Feb 19 23:50:32 2010 +0200
@@ -82,13 +82,13 @@
      * Adds subscriber for the notification
      * @param aObserver Observer
      */
-    void SubscribeL(MUsbBusActivityObserver* aObserver);
+    void SubscribeL(MUsbBusActivityObserver& aObserver);
 
     /**
      * Removes observer
      * @param aObserver Observer
      */
-    void UnsubscribeL(MUsbBusActivityObserver* aObserver);
+    void UnsubscribeL(MUsbBusActivityObserver& aObserver);
 
 private: