diff --git a/install/lang/zh_cn/langconfig.php b/install/lang/zh_cn/langconfig.php
index 4c15df0e70e..0bc12e9714c 100644
--- a/install/lang/zh_cn/langconfig.php
+++ b/install/lang/zh_cn/langconfig.php
@@ -31,5 +31,5 @@
 defined('MOODLE_INTERNAL') || die();
 
 $string['parentlanguage'] = '';
-$string['thisdirection'] = '';
+$string['thisdirection'] = 'ltr';
 $string['thislanguage'] = '简体中文';