diff --git a/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c b/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c
index 9733aa6ef908..1662c03c1323 100644
--- a/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c
+++ b/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c
@@ -127,8 +127,7 @@ int rtl8723a_set_raid_cmd(struct rtw_adapter *padapter, u32 mask, u8 arg)
 	u8 buf[5];
 
 	memset(buf, 0, 5);
-	mask = cpu_to_le32(mask);
-	memcpy(buf, &mask, 4);
+	put_unaligned_le32(mask, buf);
 	buf[4]  = arg;
 
 	FillH2CCmd(padapter, MACID_CONFIG_EID, 5, buf);