diff --git a/mod/quiz/report/overview/report.php b/mod/quiz/report/overview/report.php
index f91c360acd7..c106747be7d 100644
--- a/mod/quiz/report/overview/report.php
+++ b/mod/quiz/report/overview/report.php
@@ -34,7 +34,7 @@ class quiz_overview_report extends quiz_default_report {
 
         /// find out current groups mode
         $currentgroup = groups_get_activity_group($cm, true);
-        if (!$students = get_users_by_capability($this->context, array('mod/quiz:reviewmyattempts', 'mod/quiz:attempt'),'','','','','','',false)){
+        if (!$students = get_users_by_capability($this->context, array('mod/quiz:reviewmyattempts', 'mod/quiz:attempt'),'id,1','','','','','',false)){
             $students = array();
         } else {
             $students = array_keys($students);
@@ -46,7 +46,7 @@ class quiz_overview_report extends quiz_default_report {
             $groupstudents = array();
         } else {
             // all users who can attempt quizzes and who are in the currently selected group
-            if (!$groupstudents = get_users_by_capability($this->context, array('mod/quiz:reviewmyattempts', 'mod/quiz:attempt'),'','','','',$currentgroup,'',false)){
+            if (!$groupstudents = get_users_by_capability($this->context, array('mod/quiz:reviewmyattempts', 'mod/quiz:attempt'),'id,1','','','',$currentgroup,'',false)){
                 $groupstudents = array();
             } else {
                 $groupstudents = array_keys($groupstudents);
diff --git a/mod/quiz/report/responses/report.php b/mod/quiz/report/responses/report.php
index 7ca786dae8a..1b46a6f4d1e 100644
--- a/mod/quiz/report/responses/report.php
+++ b/mod/quiz/report/responses/report.php
@@ -90,7 +90,7 @@ class quiz_responses_report extends quiz_default_report {
         $displayoptions['qmfilter'] = $qmfilter;
 
         //work out the sql for this table.
-        if (!$students = get_users_by_capability($context, array('mod/quiz:reviewmyattempts', 'mod/quiz:attempt'),'','','','','','',false)){
+        if (!$students = get_users_by_capability($context, array('mod/quiz:reviewmyattempts', 'mod/quiz:attempt'),'id,1','','','','','',false)){
             $students = array();
         } else {
             $students = array_keys($students);
@@ -102,7 +102,7 @@ class quiz_responses_report extends quiz_default_report {
             $groupstudents = array();
         } else {
             // all users who can attempt quizzes and who are in the currently selected group
-            if (!$groupstudents = get_users_by_capability($context, array('mod/quiz:reviewmyattempts', 'mod/quiz:attempt'),'','','','',$currentgroup,'',false)){
+            if (!$groupstudents = get_users_by_capability($context, array('mod/quiz:reviewmyattempts', 'mod/quiz:attempt'),'id,1','','','',$currentgroup,'',false)){
                 $groupstudents = array();
             } else {
                 $groupstudents = array_keys($groupstudents);