diff --git a/model/sync-app-socket.h b/model/sync-app-socket.h
index 29f8dc1..fb2d271 100644
--- a/model/sync-app-socket.h
+++ b/model/sync-app-socket.h
@@ -68,7 +68,7 @@
    *
 	 * @param the prefix for the participant
    */
-	bool remove (const std::string &prefix) {return m_syncLogic->remove(prefix);}
+	void remove (const std::string &prefix) {m_syncLogic.remove(prefix);}
 
 private:
   CcnxWrapperPtr m_ccnxHandle;
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;