diff --git a/packages/webpack5/src/configuration/base.ts b/packages/webpack5/src/configuration/base.ts
index fd46c59f3..37d85c86d 100644
--- a/packages/webpack5/src/configuration/base.ts
+++ b/packages/webpack5/src/configuration/base.ts
@@ -352,8 +352,6 @@ export default function (config: Config, env: IWebpackEnv = _env): Config {
 			__NS_ENV_VERBOSE__: !!env.verbose,
 			__NS_DEV_HOST_IPS__:
 				mode === 'development' ? JSON.stringify(getIPS()) : `[]`,
-            __UI_USE_XML_PARSER__: true,
-			__UI_USE_EXTERNAL_RENDERER__: projectUsesCustomFlavor(),
 			__CSS_PARSER__: JSON.stringify(getValue('cssParser', 'css-tree')),
 			__UI_USE_XML_PARSER__: true,
 			__UI_USE_EXTERNAL_RENDERER__: false,