diff --git a/report/stats/user.php b/report/stats/user.php
index 25fbf0a6965..85841ea5357 100644
--- a/report/stats/user.php
+++ b/report/stats/user.php
@@ -127,7 +127,7 @@ $params = $param->params;
 
 $param->table = 'user_'.$param->table;
 
-$sql = 'SELECT timeend,'.$param->fields.' FROM {stats_'.$param->table.'} WHERE '
+$sql = 'SELECT id, timeend,'.$param->fields.' FROM {stats_'.$param->table.'} WHERE '
 .(($course->id == SITEID) ? '' : ' courseid = '.$course->id.' AND ')
     .' userid = '.$user->id.' AND timeend >= '.$param->timeafter .$param->extras
     .' ORDER BY timeend DESC';