diff --git a/rdf/resources/sidebar.xul b/rdf/resources/sidebar.xul
index c042c8f91af..291bff7c881 100644
--- a/rdf/resources/sidebar.xul
+++ b/rdf/resources/sidebar.xul
@@ -43,8 +43,8 @@ function doSort(sortColName)
 		rdfCore.Init("RDFCore");
                 dump("RDFCore inited\n");
 
-                XPAppCoresManager.Add(rdfCore);
-                dump("RDFCore added into XPAppCoresManager\n");
+//                XPAppCoresManager.Add(rdfCore);
+//                dump("RDFCore added into XPAppCoresManager\n");
 	}
 
 	// sort!!!