--- a/drivers/net/wireless/ath/ath5k/mac80211-ops.c
+++ b/drivers/net/wireless/ath/ath5k/mac80211-ops.c
@@ -617,7 +617,7 @@ ath5k_conf_tx(struct ieee80211_hw *hw, s
 	qi.tqi_aifs = params->aifs;
 	qi.tqi_cw_min = params->cw_min;
 	qi.tqi_cw_max = params->cw_max;
-	qi.tqi_burst_time = params->txop;
+	qi.tqi_burst_time = params->txop * 32;
 
 	ATH5K_DBG(ah, ATH5K_DEBUG_ANY,
 		  "Configure tx [queue %d],  "