diff --git a/site/theme/template/Layout/Header/index.tsx b/site/theme/template/Layout/Header/index.tsx
index 6063d1c2b7..3b746fd338 100644
--- a/site/theme/template/Layout/Header/index.tsx
+++ b/site/theme/template/Layout/Header/index.tsx
@@ -94,7 +94,7 @@ class Header extends React.Component<HeaderProps, HeaderState> {
     router.listen(this.handleHideMenu);
 
     initDocSearch({
-      isZhCN: intl.locale === 'zh',
+      isZhCN: intl.locale === 'zh-CN',
       router,
     });