diff --git a/mailcow/src/mailcow-dockerized/helper-scripts/add-new-lang-keys.php b/mailcow/src/mailcow-dockerized/helper-scripts/add-new-lang-keys.php
index 19010f8..1f5f377 100644
--- a/mailcow/src/mailcow-dockerized/helper-scripts/add-new-lang-keys.php
+++ b/mailcow/src/mailcow-dockerized/helper-scripts/add-new-lang-keys.php
@@ -26,7 +26,7 @@
 }
 
 // load master lang
-$masterLang = file_get_contents(__DIR__.'/../data/web/lang/lang.en.json');
+$masterLang = file_get_contents(__DIR__.'/../data/web/lang/lang.en-gb.json');
 $masterLang = json_decode($masterLang, true);
 
 // load target lang