diff --git a/mod/quiz/report/overview/report.php b/mod/quiz/report/overview/report.php
index 4f05d6d6d24..61d0a76a8dd 100644
--- a/mod/quiz/report/overview/report.php
+++ b/mod/quiz/report/overview/report.php
@@ -316,6 +316,11 @@ class quiz_report extends quiz_default_report {
                 $sort = ' ORDER BY '.implode(', ', $newsort);
             }
 
+            // Fix some wired sorting
+            if (empty($sort)) {
+                $sort = ' ORDER BY uniqueid';
+            }
+
             // Now it is time to page the data
             if (!isset($pagesize)  || ((int)$pagesize < 1) ) {
                 $pagesize = 10;