diff --git a/config/routes.rb b/config/routes.rb
index 7537a11d..57eefe23 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -48,7 +48,7 @@ Gitlab::Application.routes.draw do
   #
   # Attachments serving
   #
-  get 'files/:type/:id/:filename' => 'files#download', constraints: { id: /\d+/, type: /[a-z]+/, filename: /[a-zA-Z.0-9_\-\+]+/ }
+  get 'files/:type/:id/:filename' => 'files#download', constraints: { id: /\d+/, type: /[a-z]+/, filename:  /.+/ }
 
   #
   # Admin Area