diff --git a/homeassistant/components/homekit_controller/light.py b/homeassistant/components/homekit_controller/light.py
index 5409df7c1a81..ab19adb8e9d6 100644
--- a/homeassistant/components/homekit_controller/light.py
+++ b/homeassistant/components/homekit_controller/light.py
@@ -131,7 +131,7 @@ class HomeKitLight(HomeKitEntity, LightEntity):
         )
 
     @property
-    def color_mode(self) -> str:
+    def color_mode(self) -> ColorMode:
         """Return the color mode of the light."""
         # aiohomekit does not keep track of the light's color mode, report
         # hs for light supporting both hs and ct