diff --git a/gen/pbscheme/gen_dir.go b/gen/pbscheme/gen_dir.go
index 683bb3f..39c0303 100644
--- a/gen/pbscheme/gen_dir.go
+++ b/gen/pbscheme/gen_dir.go
@@ -5,10 +5,8 @@ import (
 	"github.com/davyxu/protoplus/codegen"
 	"github.com/davyxu/protoplus/gen"
 	"github.com/davyxu/protoplus/model"
-	"io/ioutil"
 	"path/filepath"
 	"sort"
-	"strings"
 )
 
 const protoDirCodeTemplate = `// Generated by github.com/davyxu/protoplus
@@ -104,26 +102,26 @@ func GenProtoDir(ctx *gen.Context) error {
 
 	rootDS := &PBDescriptorSet{DescriptorSet: *ctx.DescriptorSet}
 
-	var sb strings.Builder
+	//var sb strings.Builder
 
 	var srcNameList []string
 	for srcName, ds := range rootDS.DescriptorSetBySource() {
 
 		srcNameList = append(srcNameList, srcName)
 
-		gen := codegen.NewCodeGen("dirproto").
+		generator := codegen.NewCodeGen("dirproto").
 			RegisterTemplateFunc(codegen.UsefulFunc).
 			RegisterTemplateFunc(UsefulFunc).
 			ParseTemplate(protoDirCodeTemplate, ds)
 
-		if gen.Error() != nil {
-			fmt.Println(string(gen.Data()))
-			return gen.Error()
+		if generator.Error() != nil {
+			fmt.Println(string(generator.Data()))
+			return generator.Error()
 		}
 
 		fullPathName := filepath.Join(ctx.OutputFileName, srcName)
 
-		err := gen.WriteOutputFile(fullPathName).Error()
+		err := generator.WriteOutputFile(fullPathName).Error()
 		if err != nil {
 			return err
 		}
@@ -131,11 +129,11 @@ func GenProtoDir(ctx *gen.Context) error {
 
 	sort.Strings(srcNameList)
 
-	for _, d := range srcNameList {
-		fmt.Fprintf(&sb, "%s ", d)
-	}
-
-	err := ioutil.WriteFile(filepath.Join(ctx.OutputFileName, "filelist.txt"), []byte(sb.String()), 0666)
+	//for _, d := range srcNameList {
+	//	fmt.Fprintf(&sb, "%s ", d)
+	//}
+	//
+	//err := ioutil.WriteFile(filepath.Join(ctx.OutputFileName, "filelist.txt"), []byte(sb.String()), 0666)
 
-	return err
+	return nil
 }