diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
index 2df72cbaf55c5b321fa92b48a873ff7d4c05359d..1194eeb69633a692d74d0eef03c9a539de5ebfd5 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -104,7 +104,7 @@ static int ar9003_hw_set_channel(struct ath_hw *ah, struct ath9k_channel *chan)
 			u32 chan_frac;
 
 			channelSel = (freq * 2) / 75;
-			chan_frac = ((freq % 75) * 0x20000) / 75;
+			chan_frac = (((freq * 2) % 75) * 0x20000) / 75;
 			channelSel = (channelSel << 17) | chan_frac;
 		} else {
 			channelSel = CHANSEL_5G(freq);