diff --git a/doc/ipsec-to-dns.md b/doc/ipsec-to-dns.md
index cf4abeeb..b043e02a 100644
--- a/doc/ipsec-to-dns.md
+++ b/doc/ipsec-to-dns.md
@@ -4,7 +4,7 @@ Create DNS records for IPSec peers
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+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.22-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
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diff --git a/ipsec-to-dns.rsc b/ipsec-to-dns.rsc
index a08405fb..ad7f87c1 100644
--- a/ipsec-to-dns.rsc
+++ b/ipsec-to-dns.rsc
@@ -3,13 +3,12 @@
 # Copyright (c) 2021-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.22
 # requires device-mode, ipsec
 #
 # and add/remove/update DNS entries from IPSec mode-config
 # https://rsc.eworm.de/doc/ipsec-to-dns.md
 
-:local ExitOK false;
 :onerror Err {
   :global GlobalConfigReady; :global GlobalFunctionsReady;
   :retry { :if ($GlobalConfigReady != true || $GlobalFunctionsReady != true) \
@@ -28,8 +27,7 @@
   :global ScriptLock;
 
   :if ([ $ScriptLock $ScriptName ] = false) do={
-    :set ExitOK true;
-    :error false;
+    :exit;
   }
 
   :local Zone \
@@ -80,5 +78,5 @@
     }
   }
 } do={
-  :global ExitError; $ExitError $ExitOK [ :jobname ] $Err;
+  :global ExitOnError; $ExitOnError [ :jobname ] $Err;
 }