diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index 4164fce..74451f9 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -274,6 +274,7 @@
 
 	spin_lock_init(&intf->lock);
 	spin_lock_init(&intf->seqlock);
+	mutex_init(&intf->beacon_skb_mutex);
 	intf->beacon = entry;
 
 	if (conf->type == NL80211_IFTYPE_AP)