diff --git a/homeassistant/components/tellduslive/light.py b/homeassistant/components/tellduslive/light.py
index a3965f520d5..a0721a21c20 100644
--- a/homeassistant/components/tellduslive/light.py
+++ b/homeassistant/components/tellduslive/light.py
@@ -4,7 +4,7 @@ import logging
 from homeassistant.components import light, tellduslive
 from homeassistant.components.light import (
     ATTR_BRIGHTNESS,
-    SUPPORT_BRIGHTNESS,
+    COLOR_MODE_BRIGHTNESS,
     LightEntity,
 )
 from homeassistant.config_entries import ConfigEntry
@@ -39,6 +39,9 @@ async def async_setup_entry(
 class TelldusLiveLight(TelldusLiveEntity, LightEntity):
     """Representation of a Tellstick Net light."""
 
+    _attr_color_mode = COLOR_MODE_BRIGHTNESS
+    _attr_supported_color_modes = {COLOR_MODE_BRIGHTNESS}
+
     def __init__(self, client, device_id):
         """Initialize the  Tellstick Net light."""
         super().__init__(client, device_id)
@@ -54,11 +57,6 @@ class TelldusLiveLight(TelldusLiveEntity, LightEntity):
         """Return the brightness of this light between 0..255."""
         return self.device.dim_level
 
-    @property
-    def supported_features(self):
-        """Flag supported features."""
-        return SUPPORT_BRIGHTNESS
-
     @property
     def is_on(self):
         """Return true if light is on."""