diff --git a/drivers/net/wireless/ath/ath9k/ani.c b/drivers/net/wireless/ath/ath9k/ani.c
index 3da820ffc65e..e879055c058f 100644
--- a/drivers/net/wireless/ath/ath9k/ani.c
+++ b/drivers/net/wireless/ath/ath9k/ani.c
@@ -259,6 +259,27 @@ static void ath9k_hw_ani_lower_immunity(struct ath_hw *ah)
 	}
 }
 
+static u8 ath9k_hw_chan_2_clockrate_mhz(struct ath_hw *ah)
+{
+	struct ath9k_channel *chan = ah->curchan;
+	struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
+	u8 clockrate; /* in MHz */
+
+	if (!ah->curchan) /* should really check for CCK instead */
+		clockrate = ATH9K_CLOCK_RATE_CCK;
+	else if (conf->channel->band == IEEE80211_BAND_2GHZ)
+		clockrate = ATH9K_CLOCK_RATE_2GHZ_OFDM;
+	else if (IS_CHAN_A_FAST_CLOCK(ah, chan))
+		clockrate = ATH9K_CLOCK_FAST_RATE_5GHZ_OFDM;
+	else
+		clockrate = ATH9K_CLOCK_RATE_5GHZ_OFDM;
+
+	if (conf_is_ht40(conf))
+		return clockrate * 2;
+
+	return clockrate * 2;
+}
+
 static int32_t ath9k_hw_ani_get_listen_time(struct ath_hw *ah)
 {
 	struct ar5416AniState *aniState;
@@ -278,7 +299,15 @@ static int32_t ath9k_hw_ani_get_listen_time(struct ath_hw *ah)
 		int32_t ccdelta = cycleCount - aniState->cycleCount;
 		int32_t rfdelta = rxFrameCount - aniState->rxFrameCount;
 		int32_t tfdelta = txFrameCount - aniState->txFrameCount;
-		listenTime = (ccdelta - rfdelta - tfdelta) / 44000;
+		int32_t clock_rate = ath9k_hw_chan_2_clockrate_mhz(ah) * 1000;;
+
+		/*
+		 * convert HW counter values to ms using mode
+		 * specifix clock rate
+		 */
+		clock_rate = ath9k_hw_chan_2_clockrate_mhz(ah) * 1000;;
+
+		listenTime = (ccdelta - rfdelta - tfdelta) / clock_rate;
 	}
 	aniState->cycleCount = cycleCount;
 	aniState->txFrameCount = txFrameCount;