diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index aa4f144449970568b1af914fe87d2de4e801f923..44d74495c4de1465dbf42cba08b6bff03090023a 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -403,7 +403,6 @@ void ath9k_calculate_iter_data(struct ieee80211_hw *hw,
 #define	ATH_BCBUF               	8
 #define ATH_DEFAULT_BINTVAL     	100 /* TU */
 #define ATH_DEFAULT_BMISS_LIMIT 	10
-#define IEEE80211_MS_TO_TU(x)           (((x) * 1000) / 1024)
 
 #define TSF_TO_TU(_h,_l) \
 	((((u32)(_h)) << 22) | (((u32)(_l)) >> 10))
diff --git a/drivers/net/wireless/ath/ath9k/common.h b/drivers/net/wireless/ath/ath9k/common.h
index 26aafb394a5cff076d3fe04bb9b1cf07a72c2f63..8deed82f741bbc1dd4d3011cbda2875ce22fabb2 100644
--- a/drivers/net/wireless/ath/ath9k/common.h
+++ b/drivers/net/wireless/ath/ath9k/common.h
@@ -44,6 +44,8 @@
 #define ATH_EP_RND(x, mul) 						\
 	(((x) + ((mul)/2)) / (mul))
 
+#define IEEE80211_MS_TO_TU(x)   (((x) * 1000) / 1024)
+
 struct ath_beacon_config {
 	int beacon_interval;
 	u16 dtim_period;
diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h
index 124dfedb0fd1b352b5e1a386c55ec5b91074726a..dab1f0cab9937d17fd0df75d88c3eafb0ff8ec54 100644
--- a/drivers/net/wireless/ath/ath9k/htc.h
+++ b/drivers/net/wireless/ath/ath9k/htc.h
@@ -39,7 +39,6 @@
 #define ATH_RESTART_CALINTERVAL   1200000 /* 20 minutes */
 
 #define ATH_DEFAULT_BMISS_LIMIT 10
-#define IEEE80211_MS_TO_TU(x)   (((x) * 1000) / 1024)
 #define TSF_TO_TU(_h, _l) \
 	((((u32)(_h)) << 22) | (((u32)(_l)) >> 10))