diff --git a/docs/sources/installation/configuration.md b/docs/sources/installation/configuration.md
index 5a838e8a321..8d156e739bf 100644
--- a/docs/sources/installation/configuration.md
+++ b/docs/sources/installation/configuration.md
@@ -127,10 +127,13 @@ Another way is put a webserver like Nginx or Apache in front of Grafana and have
 
 ### protocol
 
-`http` or `https`
+`http`,`https` or `socket`
 
 > **Note** Grafana versions earlier than 3.0 are vulnerable to [POODLE](https://en.wikipedia.org/wiki/POODLE). So we strongly recommend to upgrade to 3.x or use a reverse proxy for ssl termination.
 
+### socket
+Path where the socket should be created when `protocol=socket`. Please make sure that Grafana has appropriate permissions.
+
 ### domain
 
 This setting is only used in as a part of the `root_url` setting (see below). Important if you