Index: typo3/sysext/pagetree/extdirect/dataprovider/class.tx_pagetree_dataprovider_pagetree.php
===================================================================
--- typo3/sysext/pagetree/extdirect/dataprovider/class.tx_pagetree_dataprovider_pagetree.php	(revision 9663)
+++ typo3/sysext/pagetree/extdirect/dataprovider/class.tx_pagetree_dataprovider_pagetree.php	(working copy)
@@ -249,7 +249,7 @@
 		$prefix = '';
 
 		if ($this->pageTree->getTsConfigOptionForPagetree('showPageIdWithTitle')) {
-			$prefix .= $row['uid'];
+			$prefix .= '[' . $row['uid'] . ']';
 		}
 		return $prefix;
 	}