diff --git a/homeassistant/const.py b/homeassistant/const.py
index 143704e1968..1bc7c044eb2 100644
--- a/homeassistant/const.py
+++ b/homeassistant/const.py
@@ -26,6 +26,7 @@ CONF_PASSWORD = "password"
 CONF_API_KEY = "api_key"
 CONF_ACCESS_TOKEN = "access_token"
 CONF_FILENAME = "filename"
+CONF_PHONE_NUMBER = "phone_number"
 
 CONF_VALUE_TEMPLATE = "value_template"