diff --git a/presentation/lookAndFeel/knowledgeTree/documentmanagement/viewUI.inc b/presentation/lookAndFeel/knowledgeTree/documentmanagement/viewUI.inc
index 32adff5..d5fb567 100644
--- a/presentation/lookAndFeel/knowledgeTree/documentmanagement/viewUI.inc
+++ b/presentation/lookAndFeel/knowledgeTree/documentmanagement/viewUI.inc
@@ -14,6 +14,7 @@
 */
 
 function renderDocumentPath($oDocument) {
+	global $default;
 	$sDocumentPath = displayFolderPathLink(Folder::getFolderPathAsArray($oDocument->getFolderID()), "$default->owl_root_url/control.php?action=browse") . " > " . $oDocument->getName();
 	return "<table border=1 width = 100%><tr><td>$sDocumentPath</td></tr></table>\n";	
 }