diff --git a/pkg/net/rpc/warden/client.go b/pkg/net/rpc/warden/client.go
index 93b9262eb..d5e21dc88 100644
--- a/pkg/net/rpc/warden/client.go
+++ b/pkg/net/rpc/warden/client.go
@@ -3,6 +3,8 @@ package warden
 import (
 	"context"
 	"fmt"
+	"github.com/bilibili/kratos/pkg/net/rpc/warden/resolver"
+	"github.com/bilibili/kratos/pkg/net/rpc/warden/resolver/direct"
 	"net/url"
 	"os"
 	"strconv"
@@ -51,6 +53,11 @@ func baseMetadata() metadata.MD {
 	return gmd
 }
 
+// Register direct resolver by default to handle direct:// scheme.
+func init() {
+	resolver.Register(direct.New())
+}
+
 // ClientConfig is rpc client conf.
 type ClientConfig struct {
 	Dial                   xtime.Duration