ioloop.diff

diff --git a/t/mojo/ioloop.t b/t/mojo/ioloop.t
index 371343d..d2df175 100644
--- a/t/mojo/ioloop.t
+++ b/t/mojo/ioloop.t
@@ -275,7 +275,7 @@ $err  = '';
 $loop = Mojo::IOLoop->new->max_accepts(1);
 $id   = $loop->server({address => '127.0.0.1'} => sub { shift; shift->close });
 $port = $loop->acceptor($id)->port;
-$loop->client({port => $port} => sub { });
+$loop->client({port => $port} => sub { shift; shift; shift->close });
 $loop->timer(5 => sub { shift->stop; $err = 'failed' });
 $loop->start;
 ok !$err, 'no error';