diff --git a/homeassistant/components/alexa/capabilities.py b/homeassistant/components/alexa/capabilities.py
index c8bc76fbe83..b8bd3841a78 100644
--- a/homeassistant/components/alexa/capabilities.py
+++ b/homeassistant/components/alexa/capabilities.py
@@ -326,7 +326,7 @@ class AlexaColorTemperatureController(AlexaCapibility):
             return color_util.color_temperature_mired_to_kelvin(
                 self.entity.attributes["color_temp"]
             )
-        return 0
+        return None
 
 
 class AlexaPercentageController(AlexaCapibility):
diff --git a/tests/components/alexa/test_capabilities.py b/tests/components/alexa/test_capabilities.py
index 94c931e3514..d53f145e6ff 100644
--- a/tests/components/alexa/test_capabilities.py
+++ b/tests/components/alexa/test_capabilities.py
@@ -294,8 +294,8 @@ async def test_report_colored_temp_light_state(hass):
     )
 
     properties = await reported_properties(hass, "light.test_off")
-    properties.assert_equal(
-        "Alexa.ColorTemperatureController", "colorTemperatureInKelvin", 0
+    properties.assert_not_has_property(
+        "Alexa.ColorTemperatureController", "colorTemperatureInKelvin"
     )