diff --git a/src/calibre/srv/opts.py b/src/calibre/srv/opts.py
index c99e826e26..beda31ccca 100644
--- a/src/calibre/srv/opts.py
+++ b/src/calibre/srv/opts.py
@@ -157,13 +157,15 @@ raw_options = (
     _('Ignored user-defined metadata fields'),
     'ignored_fields', None,
     _('Comma separated list of user-defined metadata fields that will not be displayed'
-      ' by the Content server in the /opds and /mobile views.'),
+      ' by the Content server in the /opds and /mobile views. For example: {}').format(
+      'my_rating,my_tags'),
 
     _('Restrict displayed user-defined fields'),
     'displayed_fields', None,
     _('Comma separated list of user-defined metadata fields that will be displayed'
       ' by the Content server in the /opds and /mobile views. If you specify this'
-      ' option, any fields not in this list will not be displayed.'),
+      ' option, any fields not in this list will not be displayed. For example: {}').format(
+      'my_rating,my_tags'),
 
 
 )