diff --git a/Classes/Configuration/ExtConf.php b/Classes/Configuration/ExtConf.php
index 0bb83a2..367e0bd 100644
--- a/Classes/Configuration/ExtConf.php
+++ b/Classes/Configuration/ExtConf.php
@@ -22,6 +22,8 @@
 #[Autoconfigure(constructor: 'create')]
 final readonly class ExtConf
 {
+    private const EXT_KEY = 'clubdirectory';
+
     private const DEFAULT_SETTINGS = [
         // General Settings
         'userGroup' => 0,