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	diff --git a/lib/captcha.ex b/lib/captcha.ex
	index 6a56835..0118acd 100644
	--- a/lib/captcha.ex
	+++ b/lib/captcha.ex
	@@ -1,17 +1,17 @@
	defmodule Captcha do
	# allow customize receive timeout, default: 10_000
	def get(timeout \\ 1_000) do
	- Port.open({:spawn, Path.join(:code.priv_dir(:captcha), "captcha")}, [:binary])
	+ pid = Port.open({:spawn, Path.join(:code.priv_dir(:captcha), "captcha")}, [:binary])

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

	other -> other
	after timeout ->
	{:timeout}
	end
	end
	end