diff --git a/homeassistant/components/fritzbox/light.py b/homeassistant/components/fritzbox/light.py
index 65446dc3e04..1009b0fb368 100644
--- a/homeassistant/components/fritzbox/light.py
+++ b/homeassistant/components/fritzbox/light.py
@@ -17,7 +17,7 @@ from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from . import FritzboxDataUpdateCoordinator, FritzBoxDeviceEntity
-from .const import COLOR_MODE, COLOR_TEMP_MODE, LOGGER
+from .const import COLOR_MODE, LOGGER
 from .coordinator import FritzboxConfigEntry
 
 SUPPORTED_COLOR_MODES = {ColorMode.COLOR_TEMP, ColorMode.HS}
@@ -80,11 +80,8 @@ class FritzboxLight(FritzBoxDeviceEntity, LightEntity):
         return (hue, float(saturation) * 100.0 / 255.0)
 
     @property
-    def color_temp_kelvin(self) -> int | None:
+    def color_temp_kelvin(self) -> int:
         """Return the CT color value."""
-        if self.data.color_mode != COLOR_TEMP_MODE:
-            return None
-
         return self.data.color_temp  # type: ignore [no-any-return]
 
     @property
diff --git a/tests/components/fritzbox/__init__.py b/tests/components/fritzbox/__init__.py
index 09e0aeaee51..bd68615212d 100644
--- a/tests/components/fritzbox/__init__.py
+++ b/tests/components/fritzbox/__init__.py
@@ -180,6 +180,7 @@ class FritzDeviceLightMock(FritzEntityBaseMock):
     level = 100
     present = True
     state = True
+    color_temp = None
 
 
 class FritzDeviceCoverMock(FritzEntityBaseMock):