diff --git a/lib/xler/native.ex b/lib/xler/native.ex
index f478144..034146f 100644
--- a/lib/xler/native.ex
+++ b/lib/xler/native.ex
@@ -1,5 +1,6 @@
 defmodule Xler.Native do
   use Rustler, otp_app: :xler, crate: :xler_native
+  @moduledoc false
 
   def parse(_filename, _worksheet), do: error()
   def worksheets(_filename), do: error()