diff --git a/install/lang/zh_tw/langconfig.php b/install/lang/zh_tw/langconfig.php
index 4771cc5022884..766c7e7e8d23b 100644
--- a/install/lang/zh_tw/langconfig.php
+++ b/install/lang/zh_tw/langconfig.php
@@ -30,5 +30,6 @@
 
 defined('MOODLE_INTERNAL') || die();
 
+$string['parentlanguage'] = 'Chinese';
 $string['thisdirection'] = 'ltr';
 $string['thislanguage'] = '正體中文';