diff --git a/sys/living/comm.h b/sys/living/comm.h
index 83811bb..7cb7388 100644
--- a/sys/living/comm.h
+++ b/sys/living/comm.h
@@ -97,6 +97,7 @@
 
 public varargs int ReceiveMsg(string msg, int msg_type, string msg_action,
                               string msg_prefix, object origin);
+public int ReceiveNotify(string msg, string action = 0);
 
 #endif // __LIVING_COMM_H_PROTO__