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	diff --git a/lib/captcha.ex b/lib/captcha.ex
	index cc041a0..f9fff45 100644
	--- a/lib/captcha.ex
	+++ b/lib/captcha.ex
	@@ -1,14 +1,14 @@
	defmodule Captcha do
	def get() do
	- Port.open({:spawn, Path.join(Path.dirname(__ENV__.file), "../priv/captcha")}, [:binary])
	+ Port.open({:spawn, Path.join(:code.priv_dir(:captcha), "captcha")}, [:binary])

	receive do
	{_, {:data, data}} ->
	<<text::bytes-size(5), img::binary>> = data
	{:ok, text, img }
	other -> other
	after
	1_000 -> { :timeout }
	end
	end
	end
	diff --git a/test/elixir_captcha_test.exs b/test/elixir_captcha_test.exs
	index 0a28e06..31003f5 100644
	--- a/test/elixir_captcha_test.exs
	+++ b/test/elixir_captcha_test.exs
	@@ -1,8 +1,8 @@
	defmodule CaptchaTest do
	use ExUnit.Case
	doctest Captcha

	- test "the truth" do
	- assert 1 + 1 == 2
	+ test "generate image success" do
	+ assert {:ok, _, _} = Captcha.get()
	end
	end