diff --git a/lib/Cronjob/Sync.php b/lib/Cronjob/Sync.php
index 26dcab9..7e81d36 100644
--- a/lib/Cronjob/Sync.php
+++ b/lib/Cronjob/Sync.php
@@ -247,7 +247,7 @@ public function getParamFields()
                 'name' => 'url',
                 'label' => rex_i18n::msg('neues_entry_sync_cronjob_url'),
                 'type' => 'text',
-                'attributes' => ['required' => 'required', 'type' => 'url'],
+                'attributes' => ['type' => 'url'],
             ],
             [
                 'name' => 'token',