diff --git a/apps/provisioning_api/appinfo/routes.php b/apps/provisioning_api/appinfo/routes.php
index c4932ebb28..3c51e66469 100644
--- a/apps/provisioning_api/appinfo/routes.php
+++ b/apps/provisioning_api/appinfo/routes.php
@@ -36,7 +36,7 @@ return [
 		['root' => '/cloud', 'name' => 'Groups#getGroups', 'url' => '/groups', 'verb' => 'GET'],
 		['root' => '/cloud', 'name' => 'Groups#getGroup', 'url' => '/groups/{groupId}', 'verb' => 'GET'],
 		['root' => '/cloud', 'name' => 'Groups#addGroup', 'url' => '/groups', 'verb' => 'POST'],
-		['root' => '/cloud', 'name' => 'Groups#deleteGroup', 'url' => '/groups/{groupId}', 'verb' => 'DELETE'],
+		['root' => '/cloud', 'name' => 'Groups#deleteGroup', 'url' => '/groups/{groupId}', 'verb' => 'DELETE', 'requirements' => ['groupId' => '.+']],
 		['root' => '/cloud', 'name' => 'Groups#getSubAdminsOfGroup', 'url' => '/groups/{groupId}/subadmins', 'verb' => 'GET'],
 
 		// Users