--- src/sys/netproto/802_11/wlan/ieee80211_output.c	2007/04/01 13:59:41	1.20
+++ src/sys/netproto/802_11/wlan/ieee80211_output.c	2007/05/07 14:12:16	1.21
@@ -383,7 +383,8 @@ ieee80211_mbuf_adjust(struct ieee80211co
 
 	if (key != NULL) {
 		/* XXX belongs in crypto code? */
-		needed_space += key->wk_cipher->ic_header;
+		if ((key->wk_flags & IEEE80211_KEY_NOHDR) == 0)
+			needed_space += key->wk_cipher->ic_header;
 		/* XXX frags */
 		/*
 		 * When crypto is being done in the host we must insure