diff --git a/core/misc/ajax.js b/core/misc/ajax.js
index c35241c..ffd7a19 100644
--- a/core/misc/ajax.js
+++ b/core/misc/ajax.js
@@ -25,7 +25,7 @@ Drupal.behaviors.AJAX = {
       if (typeof element_settings.selector == 'undefined') {
         element_settings.selector = '#' + base;
       }
-      $(element_settings.selector).once('drupal-ajax', function() {
+      $(element_settings.selector).once('ajax', function() {
         element_settings.element = this;
         Drupal.ajax[element_settings.selector] = new Drupal.ajax(base, this, element_settings);
       });