diff --git a/etc/systemd/system/onlyoffice-fix.timer b/etc/systemd/system/onlyoffice-fix.timer
new file mode 100644
index 0000000..daf11f7
--- /dev/null
+++ b/etc/systemd/system/onlyoffice-fix.timer
@@ -0,0 +1,14 @@
+[Unit]
+Description=Run OnlyOffice auto-fix after Nextcloud AIO backup
+
+[Timer]
+# Primary window: every 5 minutes between 04:10–04:40 UTC
+OnCalendar=*-*-* 04:10:00..04:40:00/5 UTC
+
+# Safety run: once per hour at minute 10 (UTC)
+OnCalendar=*-*-* *:10:00 UTC
+
+Persistent=true
+
+[Install]
+WantedBy=timers.target