diff --git a/[refs] b/[refs]
index 952f7a076449..d48825715e76 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 71702bc13efd3238e02197780d6e62c51c196a9d
+refs/heads/master: 909a203566a75d26c65370d7dd933fa513d47990
diff --git a/trunk/net/mac80211/rc80211_minstrel.c b/trunk/net/mac80211/rc80211_minstrel.c
index 7c5142988bbb..6e5d68b4e427 100644
--- a/trunk/net/mac80211/rc80211_minstrel.c
+++ b/trunk/net/mac80211/rc80211_minstrel.c
@@ -418,7 +418,7 @@ minstrel_rate_init(void *priv, struct ieee80211_supported_band *sband,
 
 			/* contention window */
 			tx_time_single += t_slot + min(cw, mp->cw_max);
-			cw = (cw + 1) << 1;
+			cw = (cw << 1) | 1;
 
 			tx_time += tx_time_single;
 			tx_time_cts += tx_time_single + mi->sp_ack_dur;