diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 3a7164bf537a..6e38aa7351e3 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -1017,7 +1017,7 @@ struct ath_softc {
 
 	u8 gtt_cnt;
 	u32 intrstatus;
-	u32 rx_active_check_time;
+	unsigned long rx_active_check_time;
 	u32 rx_active_count;
 	u16 ps_flags; /* PS_* */
 	bool ps_enabled;