diff --git a/homeassistant/components/sensor/demo.py b/homeassistant/components/sensor/demo.py
index 71b6cf2b8fe..37e2555136a 100644
--- a/homeassistant/components/sensor/demo.py
+++ b/homeassistant/components/sensor/demo.py
@@ -1,4 +1,10 @@
-""" Support for Wink sensors. """
+"""
+homeassistant.components.sensor.demo
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Demo platform that has two fake sensors.
+
+"""
 from homeassistant.helpers.entity import Entity
 from homeassistant.const import TEMP_CELCIUS, ATTR_BATTERY_LEVEL