diff --git a/model/sync-logic.h b/model/sync-logic.h
index 1cc42b6..50c995f 100644
--- a/model/sync-logic.h
+++ b/model/sync-logic.h
@@ -99,7 +99,7 @@
   void sendSyncInterest ();
 
 	void 
-	processPendingSyncInterests();
+	processPendingSyncInterests(DiffStatePtr &diff);
 
 private:
   typedef std::list< boost::tuple< boost::system_time, boost::function< void ( ) > > > DelayedChecksList;