diff --git a/js/module_filter.modules.js b/js/module_filter.modules.js
index 55e616d..0e06711 100644
--- a/js/module_filter.modules.js
+++ b/js/module_filter.modules.js
@@ -52,7 +52,7 @@
           buildIndex: [
             function(item) {
               var $checkbox = $('td.checkbox :checkbox', item.element);
-              if ($checkbox.size() > 0) {
+              if ($checkbox.length > 0) {
                 item.status = $checkbox.is(':checked');
                 item.disabled = $checkbox.is(':disabled');
               }