diff --git a/net/key/af_key.c b/net/key/af_key.c
index 52efd04..4c2f6d6 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -297,8 +297,7 @@
 		err = EINTR;
 	if (err >= 512)
 		err = EINVAL;
-	if (err <= 0 || err >= 256)
-		BUG();
+	BUG_ON(err <= 0 || err >= 256);
 
 	hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
 	pfkey_hdr_dup(hdr, orig);