diff --git a/drivers/staging/rtl8188eu/hal/fw.c b/drivers/staging/rtl8188eu/hal/fw.c
index 4f1c3a2997b8..8eafd7e34f4a 100644
--- a/drivers/staging/rtl8188eu/hal/fw.c
+++ b/drivers/staging/rtl8188eu/hal/fw.c
@@ -58,8 +58,8 @@ static void _rtl88e_fw_block_write(struct adapter *adapt,
 				   const u8 *buffer, u32 size)
 {
 	u32 blk_sz = sizeof(u32);
-	u8 *buf_ptr = (u8 *)buffer;
-	u32 *pu4BytePtr = (u32 *)buffer;
+	const u8 *buf_ptr = (u8 *)buffer;
+	const u32 *pu4BytePtr = (u32 *)buffer;
 	u32 i, offset, blk_cnt, remain;
 
 	blk_cnt = size / blk_sz;