diff --git a/helper/converter.go b/helper/converter.go
index 8fec0bf..2656c8d 100644
--- a/helper/converter.go
+++ b/helper/converter.go
@@ -3,12 +3,14 @@ package helper
 import (
 	"errors"
 	"fmt"
-	json "github.com/bytedance/sonic"
+	"github.com/bytedance/sonic"
 	"github.com/hdt3213/rdb/core"
 	"github.com/hdt3213/rdb/model"
 	"os"
 )
 
+var jsonEncoder = sonic.ConfigDefault
+
 // ToJsons read rdb file and convert to json file
 func ToJsons(rdbFilename string, jsonFilename string, options ...interface{}) error {
 	if rdbFilename == "" {
@@ -44,7 +46,7 @@ func ToJsons(rdbFilename string, jsonFilename string, options ...interface{}) er
 	}
 	empty := true
 	err = dec.Parse(func(object model.RedisObject) bool {
-		data, err := json.Marshal(object)
+		data, err := jsonEncoder.Marshal(object) // enable SortMapKeys to ensure same result
 		if err != nil {
 			fmt.Printf("json marshal failed: %v", err)
 			return true
diff --git a/helper/converter_test.go b/helper/converter_test.go
index f4e6d93..bd839af 100644
--- a/helper/converter_test.go
+++ b/helper/converter_test.go
@@ -2,6 +2,7 @@ package helper
 
 import (
 	"bufio"
+	"github.com/bytedance/sonic"
 	"os"
 	"path/filepath"
 	"testing"
@@ -48,6 +49,8 @@ func compareFileByLine(t *testing.T, fn1, fn2 string) (bool, error) {
 }
 
 func TestToJson(t *testing.T) {
+	// SortMapKeys will cause performance losses, only enabled during test
+	jsonEncoder = sonic.ConfigStd
 	// use same time zone to ensure RedisObject.Expiration has same json value
 	var cstZone = time.FixedZone("CST", 8*3600)
 	time.Local = cstZone