diff --git a/playbooks/templates/configs/engelsystem/compose.yaml.j2 b/playbooks/templates/configs/engelsystem/compose.yaml.j2
index 9529f75..82056be 100644
--- a/playbooks/templates/configs/engelsystem/compose.yaml.j2
+++ b/playbooks/templates/configs/engelsystem/compose.yaml.j2
@@ -13,6 +13,7 @@ services:
       MYSQL_DATABASE: engelsystem
       APP_NAME: CCCamp2023 Alternative Engelsystem
       APP_URL: https://aes.ccchh.net
+      CONTACT_EMAIL: mailto:aes@hamburg.ccc.de
       MAIL_DRIVER: smtp
       MAIL_FROM_ADDRESS: aes@send-only-mail.ccchh.net
       MAIL_HOST: send-only-mailserver.ccchh.net