diff --git a/drivers/hwmon/atxp1.c b/drivers/hwmon/atxp1.c
index 728a1e8b91904fe570e6767322d6e0a69dc84e2b..ba843f8c4cef42355697245f916bf3346a6355aa 100644
--- a/drivers/hwmon/atxp1.c
+++ b/drivers/hwmon/atxp1.c
@@ -116,8 +116,7 @@ static ssize_t atxp1_storevcore(struct device *dev, struct device_attribute *att
 {
 	struct atxp1_data *data;
 	struct i2c_client *client;
-	char vid;
-	char cvid;
+	int vid, cvid;
 	unsigned int vcore;
 
 	client = to_i2c_client(dev);