diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 5f827a6..847215b 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -153,7 +153,7 @@
 
 	/* Don't calculate ACKs for QoS Frames with NoAck Policy set */
 	if (ieee80211_is_data_qos(hdr->frame_control) &&
-	    *(ieee80211_get_qos_ctl(hdr)) | IEEE80211_QOS_CTL_ACK_POLICY_NOACK)
+	    *(ieee80211_get_qos_ctl(hdr)) & IEEE80211_QOS_CTL_ACK_POLICY_NOACK)
 		dur = 0;
 	else
 		/* Time needed to transmit ACK