diff --git a/core/misc/ajax.js b/core/misc/ajax.js
index 5001554..eb2c510 100644
--- a/core/misc/ajax.js
+++ b/core/misc/ajax.js
@@ -234,7 +234,7 @@
    */
   Drupal.ajax = function (settings) {
     if (arguments.length !== 1) {
-      throw new Error('Drupal.ajax() function must be called with one configuration object only');
+      Drupal.throwError(new Error('Drupal.ajax() function must be called with one configuration object only'));
     }
     // Map those config keys to variables for the old Drupal.ajax function.
     var base = settings.base || false;
@@ -531,7 +531,7 @@
     // Bind the ajaxSubmit function to the element event.
     $(ajax.element).on(element_settings.event, function (event) {
       if (!drupalSettings.ajaxTrustedUrl[ajax.url] && !Drupal.url.isLocal(ajax.url)) {
-        throw new Error(Drupal.t('The callback URL is not local and not trusted: !url', {'!url': ajax.url}));
+        Drupal.throwError(new Error(Drupal.t('The callback URL is not local and not trusted: !url', {'!url': ajax.url})));
       }
       return ajax.eventResponse(this, event);
     });
@@ -962,7 +962,7 @@
       var settings = this.settings || drupalSettings;
       Drupal.attachBehaviors(this.$form.get(0), settings);
     }
-    throw new Drupal.AjaxError(xmlhttprequest, uri, customMessage);
+    Drupal.throwError(new Drupal.AjaxError(xmlhttprequest, uri, customMessage));
   };
 
   /**