diff --git a/net/wireless/lib80211_crypt_tkip.c b/net/wireless/lib80211_crypt_tkip.c
index 71447cf..ba0a1f3 100644
--- a/net/wireless/lib80211_crypt_tkip.c
+++ b/net/wireless/lib80211_crypt_tkip.c
@@ -556,7 +556,7 @@ static void michael_mic_hdr(struct sk_buff *skb, u8 * hdr)
 		memcpy(hdr, hdr11->addr3, ETH_ALEN);	/* DA */
 		memcpy(hdr + ETH_ALEN, hdr11->addr4, ETH_ALEN);	/* SA */
 		break;
-	case 0:
+	default:
 		memcpy(hdr, hdr11->addr1, ETH_ALEN);	/* DA */
 		memcpy(hdr + ETH_ALEN, hdr11->addr2, ETH_ALEN);	/* SA */
 		break;