diff --git a/server/server_test.go b/server/server_test.go
index <HASH>..<HASH> 100644
--- a/server/server_test.go
+++ b/server/server_test.go
@@ -35,6 +35,7 @@ func TestModPolicyAssign(t *testing.T) {
 		Config: config.GlobalConfig{
 			As:       1,
 			RouterId: "1.1.1.1",
+			Port:     -1,
 		},
 	})
 	assert.Nil(err)
server_test: stop listening

Listening on well-known port require the root privileges. This patch
stop listening to avoid that because this test doesn't need to accept
a peer.