diff --git a/group_vars/munin.yml b/group_vars/munin.yml
index 25b109ae..83388801 100644
--- a/group_vars/munin.yml
+++ b/group_vars/munin.yml
@@ -42,6 +42,7 @@ munin_node_bind_port: "4949"
 munin_node_allowed_cidrs: [127.0.0.1]
 
 ###  mgrote_munin_master
+munin_mode: cron # or cgi
 munin_mail_user: munin@mgrote.net
 munin_mail_server: "{{ postfix_smtp_server }}"
 munin_mail_port: "{{ 1025 }}"