diff --git a/lib/classes/task/delete_unconfirmed_users_task.php b/lib/classes/task/delete_unconfirmed_users_task.php
index d5c39394c0d..b9aa9a32a86 100644
--- a/lib/classes/task/delete_unconfirmed_users_task.php
+++ b/lib/classes/task/delete_unconfirmed_users_task.php
@@ -51,8 +51,8 @@ class delete_unconfirmed_users_task extends scheduled_task {
             $cuttime = $timenow - ($CFG->deleteunconfirmed * 3600);
             $rs = $DB->get_recordset_sql ("SELECT *
                                              FROM {user}
-                                            WHERE confirmed = 0 AND firstaccess > 0
-                                                  AND firstaccess < ? AND deleted = 0", array($cuttime));
+                                            WHERE confirmed = 0 AND timecreated > 0
+                                                  AND timecreated < ? AND deleted = 0", array($cuttime));
             foreach ($rs as $user) {
                 delete_user($user); // We MUST delete user properly first.
                 $DB->delete_records('user', array('id' => $user->id)); // This is a bloody hack, but it might work.