diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 09f1e5f2f0136c..a61386ce41eeea 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -1491,7 +1491,7 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type,
 {
 	struct thermal_zone_device *tz;
 	enum thermal_trip_type trip_type;
-	int trip_temp;
+	unsigned long trip_temp;
 	int result;
 	int count;
 	int passive = 0;