diff --git a/homeassistant/components/automation/sun.py b/homeassistant/components/automation/sun.py
index 103df6c9b39..c72474ae4dd 100644
--- a/homeassistant/components/automation/sun.py
+++ b/homeassistant/components/automation/sun.py
@@ -1,8 +1,10 @@
 """
 homeassistant.components.automation.sun
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
 Offers sun based automation rules.
+
+For more details about this automation rule, please refer to the documentation
+at https://home-assistant.io/components/automation.html#sun-trigger
 """
 import logging
 from datetime import timedelta