diff --git a/ipc/msg.c b/ipc/msg.c
index 413bf9c..4f1f263 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -74,8 +74,7 @@
 #define msg_ids(ns)	(*((ns)->ids[IPC_MSG_IDS]))
 
 #define msg_unlock(msq)		ipc_unlock(&(msq)->q_perm)
-#define msg_buildid(ns, id, seq) \
-	ipc_buildid(&msg_ids(ns), id, seq)
+#define msg_buildid(id, seq)	ipc_buildid(id, seq)
 
 static void freeque(struct ipc_namespace *, struct msg_queue *);
 static int newque(struct ipc_namespace *, struct ipc_params *);
@@ -211,7 +210,7 @@
 		return -ENOSPC;
 	}
 
-	msq->q_perm.id = msg_buildid(ns, id, msq->q_perm.seq);
+	msq->q_perm.id = msg_buildid(id, msq->q_perm.seq);
 	msq->q_stime = msq->q_rtime = 0;
 	msq->q_ctime = get_seconds();
 	msq->q_cbytes = msq->q_qnum = 0;