diff --git a/app/assets/javascripts/admin/components/site-setting.js.es6 b/app/assets/javascripts/admin/components/site-setting.js.es6
index 4703950d714..7244c6fb5ee 100644
--- a/app/assets/javascripts/admin/components/site-setting.js.es6
+++ b/app/assets/javascripts/admin/components/site-setting.js.es6
@@ -65,8 +65,8 @@ export default Ember.Component.extend(BufferedContent, Discourse.ScrollTop, {
       self.set('validationMessage', null);
       self.commitBuffer();
     }).catch(function(e) {
-      if (e.responseJSON && e.responseJSON.errors) {
-        self.set('validationMessage', e.responseJSON.errors[0]);
+      if (e.jqXHR.responseJSON && e.jqXHR.responseJSON.errors) {
+        self.set('validationMessage', e.jqXHR.responseJSON.errors[0]);
       } else {
         self.set('validationMessage', I18n.t('generic_error'));
       }