diff --git a/mxproxmox/proxmox-backup.timer b/mxproxmox/proxmox-backup.timer
index aa108d8e..589232de 100644
--- a/mxproxmox/proxmox-backup.timer
+++ b/mxproxmox/proxmox-backup.timer
@@ -4,6 +4,7 @@ ConditionHost=!deathofrats.molgen.mpg.de
 [Timer]
 OnCalendar=daily
 RandomizedDelaySec=24h
+Persistent=true
 
 [Install]
 WantedBy=timers.target