diff --git a/package/mac80211/patches/550-ath9k_fix_ani_listen_time.patch b/package/mac80211/patches/550-ath9k_fix_ani_listen_time.patch
new file mode 100644
index 000000000..92b08eb4e
--- /dev/null
+++ b/package/mac80211/patches/550-ath9k_fix_ani_listen_time.patch
@@ -0,0 +1,11 @@
+--- a/drivers/net/wireless/ath/ath9k/ani.c
++++ b/drivers/net/wireless/ath/ath9k/ani.c
+@@ -544,7 +544,7 @@ static u8 ath9k_hw_chan_2_clockrate_mhz(
+ 	if (conf_is_ht40(conf))
+ 		return clockrate * 2;
+ 
+-	return clockrate * 2;
++	return clockrate;
+ }
+ 
+ static int32_t ath9k_hw_ani_get_listen_time(struct ath_hw *ah)