diff --git a/dist/leaflet.toolbar-src.js b/dist/leaflet.toolbar-src.js
index c8e8fa4..346004f 100644
--- a/dist/leaflet.toolbar-src.js
+++ b/dist/leaflet.toolbar-src.js
@@ -2,7 +2,7 @@
 
 "use strict";
 
-L.Toolbar = (L.Layer || L.Class).extend({
+L.Toolbar = (L.Toolbar ||L.Layer || L.Class).extend({
 	statics: {
 		baseClass: 'leaflet-toolbar'
 	},
@@ -16,6 +16,7 @@ L.Toolbar = (L.Layer || L.Class).extend({
 	},
 
 	initialize: function(options) {
+		this._modes = {};
 		L.setOptions(this, options);
 		this._toolbar_type = this.constructor._toolbar_class_id;
 	},
@@ -362,4 +363,4 @@ L.toolbar.popup = function(options) {
 };
 
 
-})(window, document);
\ No newline at end of file
+})(window, document);