diff --git a/drivers/staging/rtl8188eu/hal/hal_intf.c b/drivers/staging/rtl8188eu/hal/hal_intf.c
index b21ba01abc57..b8fecc952cfc 100644
--- a/drivers/staging/rtl8188eu/hal/hal_intf.c
+++ b/drivers/staging/rtl8188eu/hal/hal_intf.c
@@ -48,15 +48,15 @@ uint rtw_hal_deinit(struct adapter *adapt)
 
 void rtw_hal_update_ra_mask(struct adapter *adapt, u32 mac_id, u8 rssi_level)
 {
-	struct mlme_priv *pmlmepriv = &(adapt->mlmepriv);
+	struct mlme_priv *pmlmepriv = &adapt->mlmepriv;
 
 	if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
 #ifdef CONFIG_88EU_AP_MODE
 		struct sta_info *psta = NULL;
 		struct sta_priv *pstapriv = &adapt->stapriv;
 
-		if ((mac_id-1) > 0)
-			psta = pstapriv->sta_aid[(mac_id-1) - 1];
+		if (mac_id - 1 > 0)
+			psta = pstapriv->sta_aid[mac_id - 2];
 		if (psta)
 			add_RATid(adapt, psta, 0);/* todo: based on rssi_level*/
 #endif