diff --git a/test/machi_file_proxy_test.erl b/test/machi_file_proxy_test.erl
index 1bf6cde..a04d880 100644
--- a/test/machi_file_proxy_test.erl
+++ b/test/machi_file_proxy_test.erl
@@ -98,7 +98,8 @@ machi_file_proxy_test_() ->
               ?_assertMatch({ok, {_, []}}, machi_file_proxy:read(Pid, 1, 1024)),
               ?_assertEqual({error, not_written}, machi_file_proxy:read(Pid, 1024, ?HYOOGE)),
               ?_assertEqual({error, not_written}, machi_file_proxy:read(Pid, ?HYOOGE, 1)),
-              ?_assertEqual({error, written}, machi_file_proxy:write(Pid, 1, random_binary(0, ?HYOOGE))),
+              {timeout, 10,
+               ?_assertEqual({error, written}, machi_file_proxy:write(Pid, 1, random_binary(0, ?HYOOGE)))},
               ?_assertMatch({ok, "test", _}, machi_file_proxy:append(Pid, random_binary(0, 1024))),
               ?_assertEqual({error, written}, machi_file_proxy:write(Pid, 1024, <<"fail">>)),
               ?_assertEqual({error, written}, machi_file_proxy:write(Pid, 1, <<"fail">>)),