diff --git a/development.ini b/development.ini
--- a/development.ini
+++ b/development.ini
@@ -66,11 +66,11 @@ use_gravatar = true
 
 ## alternative_gravatar_url allows you to use your own avatar server application
 ## the following parts of the URL will be replaced
-## %(email)s        user email
-## %(md5email)s     md5 hash of the user email (like at gravatar.com)
-## %(size)s         size of the image that is expected from the server application
-#alternative_gravatar_url = http://myavatarserver.com/getbyemail/%(email)s/%(size)s
-#alternative_gravatar_url = http://myavatarserver.com/getbymd5/%(md5email)s?s=%(size)s
+## {email}        user email
+## {md5email}     md5 hash of the user email (like at gravatar.com)
+## {size}         size of the image that is expected from the server application
+#alternative_gravatar_url = http://myavatarserver.com/getbyemail/{email}/{size}
+#alternative_gravatar_url = http://myavatarserver.com/getbymd5/{md5email}?s={size}
 
 container_auth_enabled = false
 proxypass_auth_enabled = false