diff --git a/services/Distributed-Wiki.md b/services/Distributed-Wiki.md
index 4a4a982..43ea276 100644
--- a/services/Distributed-Wiki.md
+++ b/services/Distributed-Wiki.md
@@ -33,6 +33,8 @@ gollum --css <path>/custom.css --gollum-path <path> --host 127.0.0.1  --port 456
 
 #### Header
 
+##### Site identification
+
 A custom header `X-SiteID` identifies the site you're connecting to:
 
   - `add_header X-SiteID   '<AS number>-<ISO country code>'`