diff --git a/packages/core/helpers/router-method-factory.ts b/packages/core/helpers/router-method-factory.ts
index 944240c8eec..6051303d67f 100644
--- a/packages/core/helpers/router-method-factory.ts
+++ b/packages/core/helpers/router-method-factory.ts
@@ -1,7 +1,7 @@
 import { HttpServer } from '@nestjs/common';
 import { RequestMethod } from '@nestjs/common/enums/request-method.enum';
 
-export const REQUEST_METHOD_MAP = {
+const REQUEST_METHOD_MAP = {
   [RequestMethod.GET]: 'get',
   [RequestMethod.POST]: 'post',
   [RequestMethod.PUT]: 'put',