diff --git a/js/admin-products.js b/js/admin-products.js
index 893aa2377..a404b8dbf 100644
--- a/js/admin-products.js
+++ b/js/admin-products.js
@@ -753,7 +753,9 @@ product_tabs['Informations'] = new function(){
 	var self = this;
 	this.bindAvailableForOrder = function (){
 		$("#available_for_order").click(function(){
-			if ($(this).is(':checked') || !$('input[name=\'multishop_check[show_price]\']').prop('checked'))
+
+
+			if ($(this).is(':checked') || ($('input[name=\'multishop_check[show_price]\']').lenght && !$('input[name=\'multishop_check[show_price]\']').prop('checked')))
 			{
 				$('#show_price').attr('checked', true);
 				$('#show_price').attr('disabled', true);