diff --git a/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c b/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
index eb76ac473630..cf2388f4f6e7 100644
--- a/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
+++ b/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
@@ -1847,7 +1847,7 @@ static void rtl8723a_cal_txdesc_chksum(struct tx_desc *ptxdesc)
 	ptxdesc->txdw7 &= cpu_to_le32(0xffff0000);
 
 	for (index = 0; index < count; index++)
-		checksum ^= le16_to_cpu(*(usPtr + index));
+		checksum ^= le16_to_cpu(usPtr[index]);
 
 	ptxdesc->txdw7 |= cpu_to_le32(checksum & 0x0000ffff);
 }