diff --git a/drivers/staging/rtl8192u/ieee80211/dot11d.h b/drivers/staging/rtl8192u/ieee80211/dot11d.h
index cbf93cd27f45..d4333ea106fd 100644
--- a/drivers/staging/rtl8192u/ieee80211/dot11d.h
+++ b/drivers/staging/rtl8192u/ieee80211/dot11d.h
@@ -49,7 +49,7 @@ void dot11d_update_country_ie(struct ieee80211_device *dev,
 			      u8 *addr,
 			      u16 coutry_ie_len,
 			      u8 *coutry_ie);
-u8 dot11d_get_max_tx_pwr_in_dbm(struct ieee80211_device *dev, u8 Channel);
+u8 dot11d_get_max_tx_pwr_in_dbm(struct ieee80211_device *dev, u8 channel);
 void DOT11D_ScanComplete(struct ieee80211_device *dev);
 int IsLegalChannel(struct ieee80211_device *dev, u8 channel);
 int ToLegalChannel(struct ieee80211_device *dev, u8 channel);