diff --git a/ipc/sem.c b/ipc/sem.c
index 4d88194..160fbb3 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -394,7 +394,7 @@
 	/* ipc_rmid() may have already freed the ID while sem_lock
 	 * was spinning: verify that the structure is still valid
 	 */
-	if (!ipcp->deleted)
+	if (ipc_valid_object(ipcp))
 		return container_of(ipcp, struct sem_array, sem_perm);
 
 	sem_unlock(sma, *locknum);