diff --git a/drivers/hwmon/asb100.c b/drivers/hwmon/asb100.c
index f96063680e58..272fcc837ecc 100644
--- a/drivers/hwmon/asb100.c
+++ b/drivers/hwmon/asb100.c
@@ -510,6 +510,10 @@ static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
 	err = kstrtoul(buf, 10, &val);
 	if (err)
 		return err;
+
+	if (val > 255)
+		return -EINVAL;
+
 	data->vrm = val;
 	return count;
 }