diff --git a/homeassistant/components/light/mqtt_json.py b/homeassistant/components/light/mqtt_json.py
index d26f5490049..ba2c9efcb3d 100755
--- a/homeassistant/components/light/mqtt_json.py
+++ b/homeassistant/components/light/mqtt_json.py
@@ -172,6 +172,11 @@ class MqttJson(Light):
         """Return true if we do optimistic updates."""
         return self._optimistic
 
+    @property
+    def supported_features(self):
+        """Flag supported features."""
+        return SUPPORT_MQTT_JSON
+
     def turn_on(self, **kwargs):
         """Turn the device on."""
         should_update = False