diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 47e745c5dfca..12df9ff0182d 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -383,7 +383,7 @@ void devm_thermal_zone_of_sensor_unregister(struct device *dev,
 
 #endif
 
-#if IS_ENABLED(CONFIG_THERMAL)
+#ifdef CONFIG_THERMAL
 struct thermal_zone_device *thermal_zone_device_register(const char *, int, int,
 		void *, struct thermal_zone_device_ops *,
 		struct thermal_zone_params *, int, int);