diff --git a/lib/oauth2/error.ex b/lib/oauth2/error.ex
index 8ad15dd..ab692ab 100644
--- a/lib/oauth2/error.ex
+++ b/lib/oauth2/error.ex
@@ -1,12 +1,11 @@
 defmodule OAuth2.Error do
-  @moduledoc false
-
   @type t :: %__MODULE__{
           reason: binary
         }
 
   defexception [:reason]
 
+  @doc false
   def message(%__MODULE__{reason: :econnrefused}), do: "Connection refused"
   def message(%__MODULE__{reason: reason}) when is_binary(reason), do: reason
   def message(%__MODULE__{reason: reason}), do: inspect(reason)