diff --git a/drivers/hwmon/ds620.c b/drivers/hwmon/ds620.c
index 257957c69d9229f8ffa76cec6d303a01f0d8d2e5..4f7c3fc40a89616b9d0f8497dc7aa97c0a31ec2d 100644
--- a/drivers/hwmon/ds620.c
+++ b/drivers/hwmon/ds620.c
@@ -72,7 +72,7 @@ struct ds620_data {
 	char valid;		/* !=0 if following fields are valid */
 	unsigned long last_updated;	/* In jiffies */
 
-	u16 temp[3];		/* Register values, word */
+	s16 temp[3];		/* Register values, word */
 };
 
 /*