diff --git a/appinfo/routes.php b/appinfo/routes.php
index 8a2b9be5fe..581572c1b4 100644
--- a/appinfo/routes.php
+++ b/appinfo/routes.php
@@ -161,8 +161,8 @@
 
 		['name' => 'attachment_ocs#getAll', 'url' => '/api/v{apiVersion}/cards/{cardId}/attachments', 'verb' => 'GET'],
 		['name' => 'attachment_ocs#create', 'url' => '/api/v{apiVersion}/cards/{cardId}/attachment', 'verb' => 'POST'],
-		['name' => 'attachment_ocs#update', 'url' => '/api/v{apiVersion}/cards/{cardId}/attachments/{attachmentId}', 'verb' => 'PUT'],
-		['name' => 'attachment_ocs#delete', 'url' => '/api/v{apiVersion}/cards/{cardId}/attachments/{type}:{attachmentId}', 'verb' => 'DELETE'],
+		['name' => 'attachment_ocs#delete', 'url' => '/api/v{apiVersion}/cards/{cardId}/attachments/{type}:{attachmentId}', 'verb' => 'DELETE', 'requirements' => ['type' => '[a-z_]+', 'attachmentId' => '[0-9]+']],
+		['name' => 'attachment_ocs#update', 'url' => '/api/v{apiVersion}/cards/{cardId}/attachments/{attachmentId}', 'verb' => 'PUT', 'requirements' => ['attachmentId' => '[0-9]+']],
 		['name' => 'attachment_ocs#restore', 'url' => '/api/v{apiVersion}/cards/{cardId}/attachments/{attachmentId}/restore', 'verb' => 'PUT'],
 
 		['name' => 'Config#get', 'url' => '/api/v{apiVersion}/config', 'verb' => 'GET'],