diff --git a/include/ajax.users.php b/include/ajax.users.php
index 5ec144a5b08edbc12154e9a1c8248898e0b2c2ff..328b93cf0e1d1167797ad29fcda7a0d6a1b8da8b 100644
--- a/include/ajax.users.php
+++ b/include/ajax.users.php
@@ -77,6 +77,7 @@ class UsersAjaxAPI extends AjaxController {
                     'emails__address__contains' => $q,
                     'name__contains' => $q,
                     'org__name__contains' => $q,
+                    'account__username__contains' => $q,
                 ));
                 if (UserForm::getInstance()->getField('phone'))
                     $filter->add(array('cdata__phone__contains' => $q));