diff --git a/src/services/locale/locale.service.js b/src/services/locale/locale.service.js
index 9bd33f4e34..f6a1f708da 100644
--- a/src/services/locale/locale.service.js
+++ b/src/services/locale/locale.service.js
@@ -3,7 +3,7 @@ import ISO6391 from 'iso-639-1'
 import _ from 'lodash'
 
 const specialLanguageCodes = {
-  nan: 'nan',
+  nan: 'nan-TW',
   ja_easy: 'ja',
   zh_Hant: 'zh-HANT',
   zh: 'zh-Hans'