diff --git a/drivers/net/wireless/ath/ath9k/ar9002_phy.c b/drivers/net/wireless/ath/ath9k/ar9002_phy.c
index 2cb665e2ea229021c7d11a98caf740b3b05d4f63..f4003512d8d57e223c59fc10477ad9f99d262ede 100644
--- a/drivers/net/wireless/ath/ath9k/ar9002_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.c
@@ -555,7 +555,7 @@ static void ar9002_hw_antdiv_comb_conf_set(struct ath_hw *ah,
 	REG_WRITE(ah, AR_PHY_MULTICHAIN_GAIN_CTL, regval);
 }
 
-void ar9002_hw_spectral_scan_config(struct ath_hw *ah,
+static void ar9002_hw_spectral_scan_config(struct ath_hw *ah,
 				    struct ath_spec_scan *param)
 {
 	u8 count;