diff --git a/drivers/mfd/tps65912-i2c.c b/drivers/mfd/tps65912-i2c.c
index 9ed123a..c041f2c 100644
--- a/drivers/mfd/tps65912-i2c.c
+++ b/drivers/mfd/tps65912-i2c.c
@@ -57,7 +57,7 @@
 	u8 msg[TPS6591X_MAX_REGISTER + 1];
 	int ret;
 
-	if (bytes > (TPS6591X_MAX_REGISTER + 1))
+	if (bytes > TPS6591X_MAX_REGISTER)
 		return -EINVAL;
 
 	msg[0] = reg;