diff --git a/app/browserforwarder/config.proto b/app/browserforwarder/config.proto
index 876914549..f2e3d08b5 100644
--- a/app/browserforwarder/config.proto
+++ b/app/browserforwarder/config.proto
@@ -7,8 +7,12 @@ option go_package = "github.com/v2fly/v2ray-core/v4/app/browserforwarder";
 option java_package = "com.v2ray.core.app.browserforwarder";
 option java_multiple_files = true;
 
+import "common/protoext/extensions.proto";
+
 // Config is the settings for BrowserForwarder.
 message Config {
+  option (v2ray.core.common.protoext.message_opt).type = "transport";
+  option (v2ray.core.common.protoext.message_opt).short_name = "ws";
   string listen_addr = 1;
   int32 listen_port = 2;
 }
\ No newline at end of file
diff --git a/main/commands/all/jsonv4/convert.go b/main/commands/all/jsonv4/convert.go
index 0008f7f92..6924e536e 100644
--- a/main/commands/all/jsonv4/convert.go
+++ b/main/commands/all/jsonv4/convert.go
@@ -14,7 +14,6 @@ import (
 
 	core "github.com/v2fly/v2ray-core/v4"
 	"github.com/v2fly/v2ray-core/v4/infra/conf/merge"
-	"github.com/v2fly/v2ray-core/v4/infra/conf/serial"
 	"github.com/v2fly/v2ray-core/v4/main/commands/base"
 	"github.com/v2fly/v2ray-core/v4/main/commands/helpers"
 )
@@ -81,7 +80,11 @@ func executeConvert(cmd *base.Command, args []string) {
 	inputFormat = strings.ToLower(inputFormat)
 	outputFormat = strings.ToLower(outputFormat)
 
-	m, err := helpers.LoadConfigToMap(cmd.Flag.Args(), inputFormat, confDirRecursively)
+	inputFormatMerge := inputFormat
+	if inputFormat == "jsonv5" {
+		inputFormatMerge = "json"
+	}
+	m, err := helpers.LoadConfigToMap(cmd.Flag.Args(), inputFormatMerge, confDirRecursively)
 	if err != nil {
 		base.Fatalf("failed to merge: %s", err)
 	}
@@ -113,11 +116,7 @@ func executeConvert(cmd *base.Command, args []string) {
 			base.Fatalf("failed to marshal json: %s", err)
 		}
 		r := bytes.NewReader(data)
-		cf, err := serial.DecodeJSONConfig(r)
-		if err != nil {
-			base.Fatalf("failed to decode json: %s", err)
-		}
-		pbConfig, err := cf.Build()
+		pbConfig, err := core.LoadConfig(inputFormat, r)
 		if err != nil {
 			base.Fatalf(err.Error())
 		}
@@ -131,11 +130,7 @@ func executeConvert(cmd *base.Command, args []string) {
 			base.Fatalf("failed to marshal json: %s", err)
 		}
 		r := bytes.NewReader(data)
-		cf, err := serial.DecodeJSONConfig(r)
-		if err != nil {
-			base.Fatalf("failed to decode json: %s", err)
-		}
-		pbConfig, err := cf.Build()
+		pbConfig, err := core.LoadConfig(inputFormat, r)
 		if err != nil {
 			base.Fatalf(err.Error())
 		}
@@ -151,11 +146,7 @@ func executeConvert(cmd *base.Command, args []string) {
 			base.Fatalf("failed to marshal json: %s", err)
 		}
 		r := bytes.NewReader(data)
-		cf, err := serial.DecodeJSONConfig(r)
-		if err != nil {
-			base.Fatalf("failed to decode json: %s", err)
-		}
-		pbConfig, err := cf.Build()
+		pbConfig, err := core.LoadConfig(inputFormat, r)
 		if err != nil {
 			base.Fatalf(err.Error())
 		}