diff --git a/files/pagure.cfg.sample b/files/pagure.cfg.sample
index 8d20c25..2f80884 100644
--- a/files/pagure.cfg.sample
+++ b/files/pagure.cfg.sample
@@ -30,6 +30,10 @@ SALT_EMAIL = '<secret key to be changed>'
 
 ### The URL at which the project is available.
 APP_URL = 'https://pagure.io/'
+### The URL at which the documentation of projects will be available
+## This should be in a different domain to avoid XSS issues since we want
+## to allow raw html to be displayed.
+DOC_APP_URL = 'https://docs.pagure.org'
 
 ### The URL to use to clone git repositories.
 GIT_URL_SSH = 'git@pagure.io'