diff --git a/src/client/theme-default/components/NavBarLinks.ts b/src/client/theme-default/components/NavBarLinks.ts
index 0c6d1152..6ea874a9 100644
--- a/src/client/theme-default/components/NavBarLinks.ts
+++ b/src/client/theme-default/components/NavBarLinks.ts
@@ -44,6 +44,10 @@ export default {
 
     const localeCandidates = computed(() => {
       const localeKeys = Object.keys(siteData.value.locales)
+      if (localeKeys.length <= 1) {
+        return null
+      }
+
       const currentLangBase = localeKeys.find((v) => {
         if (v === '/') {
           return false