diff --git a/docker-compose/munin/docker-compose.yml.j2 b/docker-compose/munin/docker-compose.yml.j2
index 38f1bcab..a0899ccb 100644
--- a/docker-compose/munin/docker-compose.yml.j2
+++ b/docker-compose/munin/docker-compose.yml.j2
@@ -12,6 +12,7 @@ services:
       MAILUSER: munin@mgrote.net
       MAILNAME: Munin
       MAILDOMAIN: mgrote.net
+      MAILPASSWORD: ""
       TZ: Europe/Berlin
       CRONDELAY: 5
       NODES: |