diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index 4df42d70d867d..61c2b8855cb8d 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -316,7 +316,7 @@ static int rcar_thermal_get_trip_temp(struct thermal_zone_device *zone,
 	return 0;
 }
 
-static struct thermal_zone_device_ops rcar_thermal_zone_of_ops = {
+static const struct thermal_zone_device_ops rcar_thermal_zone_of_ops = {
 	.get_temp	= rcar_thermal_get_temp,
 };