diff --git a/lang/en/validation.php b/lang/en/validation.php
index 298399f..df3e4b2 100644
--- a/lang/en/validation.php
+++ b/lang/en/validation.php
@@ -14,5 +14,6 @@ return [
         'email' => 'E-Mail-Adresse',
         'agegroup' => 'Stufe',
         'emergency_phone' => 'Notfallkontakt',
+        'group' => 'Stamm',
     ],
 ];