diff --git a/lib/porcelain/init.ex b/lib/porcelain/init.ex
index 768fe7d..d5fb19a 100644
--- a/lib/porcelain/init.ex
+++ b/lib/porcelain/init.ex
@@ -99,6 +99,13 @@ defmodule Porcelain.Init do
 
   defp find_goon() do
     cond do
+      path=get_env(:goon_driver_path) ->
+        case path do
+          {mod, fun} ->
+            apply(mod, fun, [])
+          _ ->
+            path
+        end
       path=get_env(:goon_driver_path) ->
         path
       File.exists?("goon") ->