diff --git a/admin-guide/configuration/services.md b/admin-guide/configuration/services.md
index 6a7f0aa5..3971db01 100644
--- a/admin-guide/configuration/services.md
+++ b/admin-guide/configuration/services.md
@@ -31,7 +31,8 @@ base::timers:
         description: 'test timers'
         command: '/usr/bin/logger foo'
         on_calendar: '*:*:10'
-        persistence:  false
+        timer_options:
+            persistence:  false
 ```
 
 For each timer following keys are mandatory
@@ -41,7 +42,7 @@ For each timer following keys are mandatory
 - `on_calendar` defining when it should run using the [`systemd` calendar event format](https://www.freedesktop.org/software/systemd/man/systemd.time.html#Calendar%20Events), (alternatively see also chapter "CALENDAR EVENTS" of `man systemd.date`)
 
 Optional is
-- `persistence` which signals if the timer should run immediately after boot when the node was switched of on the last scheduled run time (default is `false`)
+- `timer_options` for additional options. In the example it is  `persistence`which signals if the timer should run immediately after boot when the node was switched of on the last scheduled run time (default is `false`).
 
 ## Manage Services with Custom Unit Files