diff --git a/production.conf-example b/production.conf-example
index b86bad6..dea3412 100644
--- a/production.conf-example
+++ b/production.conf-example
@@ -20,6 +20,7 @@ app{
 }
 
 yssdc{
+  # Anyone who knows the cron key can start periodic tasks
   cronKey="{{ lookup('cron_token', 'play_secret length=64') }}"
   bamboo{
     url = …