--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -245,7 +245,7 @@ static void setup_ht_cap(struct ath_soft
 	ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
 	ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
 
-	if (AR_SREV_9485(ah))
+	if (AR_SREV_9330(ah) || AR_SREV_9485(ah))
 		max_streams = 1;
 	else if (AR_SREV_9300_20_OR_LATER(ah))
 		max_streams = 3;