--- a/management/univention-management-console-module-udm/umc/js/udm.js	
+++ a/management/univention-management-console-module-udm/umc/js/udm.js	
@@ -1151,7 +1151,12 @@ define([
 
 			// create the tree
 			var model = new TreeModel({
-				umcpCommand: lang.hitch(this, 'umcpCommand')
+				moduleFlavor: 'navigation',
+				umcpCommand: lang.hitch(this, function() {
+					var args = [].slice.call(arguments);
+					args[3] = 'navigation';
+					return this.umcpCommand.apply(arguments, args);
+				})
 			});
 			var tree = new Tree({
 				model: model,