diff --git a/demo/lib/demo_web/resource_actions/upload.ex b/demo/lib/demo_web/resource_actions/upload.ex
index ce421651..b29a3bd5 100644
--- a/demo/lib/demo_web/resource_actions/upload.ex
+++ b/demo/lib/demo_web/resource_actions/upload.ex
@@ -22,6 +22,7 @@ defmodule DemoWeb.ResourceActions.Upload do
         consume_upload: &consume_upload/4,
         remove_uploads: &remove_uploads/3,
         list_existing_files: &list_existing_files/1,
+        max_entries: 1,
         type: :string
       },
       description: %{