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	diff --git a/lib/captcha.ex b/lib/captcha.ex
	index 39cb0e3..caed0ca 100644
	--- a/lib/captcha.ex
	+++ b/lib/captcha.ex
	@@ -1,19 +1,19 @@
	defmodule Captcha do
	# allow customize receive timeout, default: 10_000
	def get(timeout \\ 1_000) do
	pid = Port.open({:spawn, Path.join(:code.priv_dir(:captcha), "captcha")}, [:binary])

	# Allow set receive timeout
	receive do
	{^pid, {:data, data}} ->
	<<text::bytes-size(5), img::binary>> = data
	{:ok, text, img}

	other ->
	other
	after
	timeout ->
	- {:timeout}
	+ {:error, :timeout}
	end
	end
	end
	diff --git a/test/elixir_captcha_test.exs b/test/elixir_captcha_test.exs
	index 31003f5..ddf2620 100644
	--- a/test/elixir_captcha_test.exs
	+++ b/test/elixir_captcha_test.exs
	@@ -1,8 +1,12 @@
	defmodule CaptchaTest do
	use ExUnit.Case
	doctest Captcha

	- test "generate image success" do
	+ test "successfully generates an image" do
	assert {:ok, _, _} = Captcha.get()
	end
	+
	+ test "respects the timeout" do
	+ assert {:error, :timeout} = Captcha.get(0)
	+ end
	end