diff --git a/install/lang/pt_br/langconfig.php b/install/lang/pt_br/langconfig.php
index a307bac428d..f10c0772807 100644
--- a/install/lang/pt_br/langconfig.php
+++ b/install/lang/pt_br/langconfig.php
@@ -30,5 +30,6 @@
 
 defined('MOODLE_INTERNAL') || die();
 
+$string['parentlanguage'] = '';
 $string['thisdirection'] = 'ltr';
 $string['thislanguage'] = 'Português - Brasil';