diff --git a/drivers/net/wireless/ath/ath9k/channel.c b/drivers/net/wireless/ath/ath9k/channel.c
index 0bcb82abd09494d459be2ffa99ae7b4c6c121011..319cb5f25f58d83fbdaab226698c8f021a3e897b 100644
--- a/drivers/net/wireless/ath/ath9k/channel.c
+++ b/drivers/net/wireless/ath/ath9k/channel.c
@@ -226,7 +226,7 @@ static const char *chanctx_state_string(enum ath_chanctx_state state)
 	}
 }
 
-static const u32 chanctx_event_delta(struct ath_softc *sc)
+static u32 chanctx_event_delta(struct ath_softc *sc)
 {
 	u64 ms;
 	struct timespec ts, *old;