diff --git a/frontend/src/wiki2.js b/frontend/src/wiki2.js
index 015fc73a84..4b159f8923 100644
--- a/frontend/src/wiki2.js
+++ b/frontend/src/wiki2.js
@@ -5,11 +5,6 @@ import Wiki from './pages/wiki2';
 import i18n from './_i18n/i18n-sdoc-editor';
 import Loading from './components/loading';
 
-// i18 need `zh-CN`
-if(window.app.config.lang === 'zh-cn') {
-  window.app.config.lang = 'zh-CN';
-}
-
 ReactDom.render(
   <I18nextProvider i18n={i18n}>
     <Suspense fallback={<Loading />}>