diff --git a/homeassistant/components/homekit/type_lights.py b/homeassistant/components/homekit/type_lights.py
index 6cd606981108dc..c723fcc08a6306 100644
--- a/homeassistant/components/homekit/type_lights.py
+++ b/homeassistant/components/homekit/type_lights.py
@@ -134,7 +134,8 @@ def update_state(self, entity_id=None, old_state=None, new_state=None):
 
         # Handle Color
         if CHAR_SATURATION in self.chars and CHAR_HUE in self.chars:
-            hue, saturation = new_state.attributes.get(ATTR_HS_COLOR)
+            hue, saturation = new_state.attributes.get(
+                ATTR_HS_COLOR, (None, None))
             if not self._flag[RGB_COLOR] and (
                     hue != self._hue or saturation != self._saturation):
                 self.char_hue.set_value(hue, should_callback=False)