diff --git a/app/models/dunlop/source_file_model.rb b/app/models/dunlop/source_file_model.rb
index f3f1075..83b16c5 100644
--- a/app/models/dunlop/source_file_model.rb
+++ b/app/models/dunlop/source_file_model.rb
@@ -279,7 +279,7 @@ module Dunlop::SourceFileModel
         end
       else
         has_attached_file :original_file,
-          url: '/system/:class/:attachment/:id/:filename',
+          url: '/system/:class/:id/:filename',
           hash_secret: 'dunlop-source-files-for-panda'
       end
       do_not_validate_attachment_file_type :original_file