diff --git a/homeassistant/components/light/osramlightify.py b/homeassistant/components/light/osramlightify.py
index b460ff52a9b..1ddfe1baa53 100644
--- a/homeassistant/components/light/osramlightify.py
+++ b/homeassistant/components/light/osramlightify.py
@@ -215,5 +215,8 @@ class OsramLightifyLight(Light):
         self._name = self._light.name()
         self._rgb = self._light.rgb()
         o_temp = self._light.temp()
-        self._temperature = color_temperature_kelvin_to_mired(o_temp)
+        if o_temp == 0:
+            self._temperature = None
+        else:
+            self._temperature = color_temperature_kelvin_to_mired(o_temp)
         self._state = self._light.on()