diff --git a/drivers/staging/rtl8723au/core/rtw_efuse.c b/drivers/staging/rtl8723au/core/rtw_efuse.c
index 5e8a1ba8a8b9..f174b4d1a018 100644
--- a/drivers/staging/rtl8723au/core/rtw_efuse.c
+++ b/drivers/staging/rtl8723au/core/rtw_efuse.c
@@ -459,7 +459,8 @@ int rtw_BT_efuse_map_read23a(struct rtw_adapter *padapter,
 }
 
 /* Read All Efuse content */
-void Efuse_ReadAllMap(struct rtw_adapter *pAdapter, u8 efuseType, u8 *Efuse)
+static void Efuse_ReadAllMap(struct rtw_adapter *pAdapter, u8 efuseType,
+			     u8 *Efuse)
 {
 	u16	mapLen = 0;