diff --git a/include/class.queue.php b/include/class.queue.php
index 950bff75c199abf8544a45df95f6ce2402d076ab..96fc37c6a6c771edff0cbd8215d5a68665e7e2c7 100644
--- a/include/class.queue.php
+++ b/include/class.queue.php
@@ -2094,6 +2094,8 @@ extends VerySimpleModel {
                 list($path, $field) = $key;
                 $fields[] = new SqlField($path);
             }
+            // Force nulls to the buttom.
+            $fields[] = 'zzz';
 
             $alias = sprintf('C%d', $this->getId());
             $expr = call_user_func_array(array('SqlFunction', 'COALESCE'),