diff --git a/ui/jquery.ui.selectable.js b/ui/jquery.ui.selectable.js
index 75f1cee66a8..8affb6693f7 100644
--- a/ui/jquery.ui.selectable.js
+++ b/ui/jquery.ui.selectable.js
@@ -21,7 +21,8 @@ $.widget("ui.selectable", $.ui.mouse, {
 		autoRefresh: true,
 		distance: 0,
 		filter: '*',
-		tolerance: 'touch'
+		tolerance: 'touch',
+		multipleByDefault : false
 	},
 	_create: function() {
 		var self = this;
@@ -103,7 +104,7 @@ $.widget("ui.selectable", $.ui.mouse, {
 		this.selectees.filter('.ui-selected').each(function() {
 			var selectee = $.data(this, "selectable-item");
 			selectee.startselected = true;
-			if (!event.metaKey) {
+			if (!event.metaKey && !options.multipleByDefault) {
 				selectee.$element.removeClass('ui-selected');
 				selectee.selected = false;
 				selectee.$element.addClass('ui-unselecting');
@@ -118,7 +119,7 @@ $.widget("ui.selectable", $.ui.mouse, {
 		$(event.target).parents().andSelf().each(function() {
 			var selectee = $.data(this, "selectable-item");
 			if (selectee) {
-				var doSelect = !event.metaKey || !selectee.$element.hasClass('ui-selected');
+				var doSelect = (!event.metaKey && !options.multipleByDefault) || !selectee.$element.hasClass('ui-selected');
 				selectee.$element
 					.removeClass(doSelect ? "ui-unselecting" : "ui-selected")
 					.addClass(doSelect ? "ui-selecting" : "ui-unselecting");