diff --git a/framework/i18n/PhpMessageSource.php b/framework/i18n/PhpMessageSource.php
index 0c60f452ae..05f7d77a3d 100644
--- a/framework/i18n/PhpMessageSource.php
+++ b/framework/i18n/PhpMessageSource.php
@@ -34,8 +34,7 @@ use Yii;
 class PhpMessageSource extends MessageSource
 {
     /**
-     * @var string the base path for all translated messages. Defaults to null, meaning
-     * the "messages" subdirectory of the application directory (e.g. "protected/messages").
+     * @var string the base path for all translated messages. Defaults to '@app/messages'.
      */
     public $basePath = '@app/messages';
     /**