diff --git a/drivers/net/wireless/realtek/rtw88/mac.c b/drivers/net/wireless/realtek/rtw88/mac.c
index 645207a01525..6969379ba37e 100644
--- a/drivers/net/wireless/realtek/rtw88/mac.c
+++ b/drivers/net/wireless/realtek/rtw88/mac.c
@@ -696,7 +696,8 @@ static void download_firmware_end_flow(struct rtw_dev *rtwdev)
 	rtw_write16(rtwdev, REG_MCUFW_CTRL, fw_ctrl);
 }
 
-int __rtw_download_firmware(struct rtw_dev *rtwdev, struct rtw_fw_state *fw)
+static int __rtw_download_firmware(struct rtw_dev *rtwdev,
+				   struct rtw_fw_state *fw)
 {
 	struct rtw_backup_info bckp[DLFW_RESTORE_REG_NUM];
 	const u8 *data = fw->firmware->data;
@@ -860,7 +861,8 @@ static int download_firmware_validate_legacy(struct rtw_dev *rtwdev)
 	return -EINVAL;
 }
 
-int __rtw_download_firmware_legacy(struct rtw_dev *rtwdev, struct rtw_fw_state *fw)
+static int __rtw_download_firmware_legacy(struct rtw_dev *rtwdev,
+					  struct rtw_fw_state *fw)
 {
 	int ret = 0;