diff --git a/custom_components/circadian_lighting/switch.py b/custom_components/circadian_lighting/switch.py
index 43b61a88..3ded81a2 100755
--- a/custom_components/circadian_lighting/switch.py
+++ b/custom_components/circadian_lighting/switch.py
@@ -273,7 +273,7 @@ class CircadianSwitch(SwitchEntity, RestoreEntity):
         self._state = True
         await self._force_update_switch()
 
-    def async_turn_off(self, **kwargs):
+    async def async_turn_off(self, **kwargs):
         """Turn off circadian lighting."""
         self._state = False
         self._hs_color = None