diff --git a/kernel/futex.c b/kernel/futex.c
index d60b7f7a8cc3bdadaf4e8aab599a425261259767..a8302a1620ea4c29b3f127a5f3c67c3ef4ca8341 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -552,7 +552,7 @@ static void wake_futex(struct futex_q *q)
 	 * at the end of wake_up_all() does not prevent this store from
 	 * moving.
 	 */
-	wmb();
+	smp_wmb();
 	q->lock_ptr = NULL;
 }