diff --git a/tools/goctl/api/gogen/genmain.go b/tools/goctl/api/gogen/genmain.go
index 1af504c4..304c4bf5 100644
--- a/tools/goctl/api/gogen/genmain.go
+++ b/tools/goctl/api/gogen/genmain.go
@@ -41,13 +41,14 @@ func main() {
 
 func genMain(dir, rootPkg string, cfg *config.Config, api *spec.ApiSpec) error {
 	name := strings.ToLower(api.Service.Name)
-	if strings.HasSuffix(name, "-api") {
-		name = strings.ReplaceAll(name, "-api", "")
-	}
 	filename, err := format.FileNamingFormat(cfg.NamingFormat, name)
 	if err != nil {
 		return err
 	}
+	configName := filename
+	if strings.HasSuffix(filename, "-api") {
+		filename = strings.ReplaceAll(filename, "-api", "")
+	}
 
 	return genFile(fileGenConfig{
 		dir:             dir,
@@ -59,7 +60,7 @@ func genMain(dir, rootPkg string, cfg *config.Config, api *spec.ApiSpec) error {
 		builtinTemplate: mainTemplate,
 		data: map[string]string{
 			"importPackages": genMainImports(rootPkg),
-			"serviceName":    api.Service.Name,
+			"serviceName":   configName,
 		},
 	})
 }