diff --git a/stream_udp_upstream.t b/stream_udp_upstream.t
index dcdef11..3f8acb9 100644
--- a/stream_udp_upstream.t
+++ b/stream_udp_upstream.t
@@ -23,7 +23,7 @@
 select STDERR; $| = 1;
 select STDOUT; $| = 1;
 
-my $t = Test::Nginx->new()->has(qw/stream udp/)->plan(4)
+my $t = Test::Nginx->new()->has(qw/stream udp/)->plan(5)
 	->write_file_expand('nginx.conf', <<'EOF');
 
 %%TEST_GLOBALS%%
@@ -95,15 +95,16 @@
 
 is(many(10, port(8980)), "$port4: 5, $port5: 5", 'balanced');
 
-# no next upstream for dgram
-
 TODO: {
 local $TODO = 'not yet' unless $t->has_version('1.15.0');
 
-is(many(10, port(8981)), "$port4: 5, $port5: 4", 'failures');
+is(dgram('127.0.0.1:' . port(8981))->io('.', read_timeout => 0.5), '',
+	'no next upstream for dgram');
 
 }
 
+is(many(10, port(8981)), "$port4: 5, $port5: 5", 'failures');
+
 is(many(9, port(8982)), "$port4: 3, $port5: 6", 'weight');
 is(many(10, port(8983)), "$port4: 10", 'backup');