diff --git a/mix.exs b/mix.exs
index 3c75342..77ad765 100644
--- a/mix.exs
+++ b/mix.exs
@@ -7,7 +7,7 @@ defmodule Waffle.Ecto.Mixfile do
     [app: :waffle_ecto,
      version: @version,
      elixir: "~> 1.4",
-     elixirc_paths: elixirc_paths(Mix.env),
+     elixirc_paths: elixirc_paths(Mix.env()),
      deps: deps(),
      docs: docs(),