diff --git a/ipc/sem.c b/ipc/sem.c
index 31b138b9e756..16414b8a8cca 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -130,8 +130,6 @@ struct sem_undo_list {
 
 #define sem_ids(ns)	((ns)->ids[IPC_SEM_IDS])
 
-#define sem_checkid(sma, semid)	ipc_checkid(&sma->sem_perm, semid)
-
 static int newary(struct ipc_namespace *, struct ipc_params *);
 static void freeary(struct ipc_namespace *, struct kern_ipc_perm *);
 #ifdef CONFIG_PROC_FS