diff --git a/daze.go b/daze.go
index 92cf304..3616cc0 100644
--- a/daze.go
+++ b/daze.go
@@ -157,7 +157,12 @@ func (c Cdoh) Write(b []byte) (n int, err error) {
 // ResolverDoh returns a DoH resolver. For further information, see https://datatracker.ietf.org/doc/html/rfc8484.
 func ResolverDoh(addr string) *net.Resolver {
 	urls := doa.Try(url.Parse(addr))
-	urls.Host = doa.Try(net.LookupHost(urls.Hostname()))[0]
+	host := doa.Try(net.LookupHost(urls.Hostname()))[0]
+	port := urls.Port()
+	urls.Host = host
+	if port != "" {
+		urls.Host = host + ":" + port
+	}
 	return &net.Resolver{
 		PreferGo: true,
 		Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
diff --git a/daze_test.go b/daze_test.go
index f3af043..19403af 100644
--- a/daze_test.go
+++ b/daze_test.go
@@ -12,6 +12,7 @@ import (
 const (
 	DazeServerListenOn = "127.0.0.1:28080"
 	CurlDest           = "https://www.zhihu.com"
+	HostLookup         = "google.com"
 )
 
 func TestLocaleHTTP(t *testing.T) {
@@ -64,7 +65,7 @@ func TestLocaleSocks5(t *testing.T) {
 
 func TestResolverDns(t *testing.T) {
 	dns := ResolverDns("1.1.1.1:53")
-	_, err := dns.LookupHost(context.Background(), "google.com")
+	_, err := dns.LookupHost(context.Background(), HostLookup)
 	if err != nil {
 		t.FailNow()
 	}
@@ -72,7 +73,7 @@ func TestResolverDns(t *testing.T) {
 
 func TestResolverDot(t *testing.T) {
 	dot := ResolverDot("1.1.1.1:853")
-	_, err := dot.LookupHost(context.Background(), "google.com")
+	_, err := dot.LookupHost(context.Background(), HostLookup)
 	if err != nil {
 		t.FailNow()
 	}
@@ -80,7 +81,7 @@ func TestResolverDot(t *testing.T) {
 
 func TestResolverDoh(t *testing.T) {
 	doh := ResolverDoh("https://1.1.1.1/dns-query")
-	_, err := doh.LookupHost(context.Background(), "google.com")
+	_, err := doh.LookupHost(context.Background(), HostLookup)
 	if err != nil {
 		t.FailNow()
 	}