diff --git a/admin/supervisor.php b/admin/supervisor.php
index c6d23479..063e14b3 100644
--- a/admin/supervisor.php
+++ b/admin/supervisor.php
@@ -373,7 +373,8 @@ if ($case_id != false)
 		MIN(CONCAT('&emsp;<a href=\'\' data-toggle=\'confirmation\' data-title=\'" . TQ_("ARE YOU SURE?") . "\' data-btnOkLabel=\'" . TQ_("Yes") . "\' data-btnCancelLabel=\'" . TQ_("No") . "\' data-placement=\'left\' data-href=\'displayappointments.php?case_id=', c.case_id, '&amp;appointment_id=', a.appointment_id,'&amp;delete=delete\'><i class=\'fa fa-trash fa-lg text-danger\' data-toggle=\'tooltip\' title=\'" . TQ_("Delete") . "\'></i></a>&emsp;')) as link,
 		MIN(CONCAT('&emsp;<a href=\'displayappointments.php?case_id=', c.case_id, '&amp;appointment_id=', a.appointment_id, '\' data-toggle=\'tooltip\' title=\'" . TQ_("Edit") . "\'><i class=\'fa fa-edit fa-lg\'></i></a>&emsp;')) as edit
 		FROM appointment as a
-		JOIN (`case` as c, respondent as r, questionnaire as q, operator as oo, call_attempt as cc, operator as co) on (a.case_id = c.case_id and a.respondent_id = r.respondent_id and q.questionnaire_id = c.questionnaire_id and a.call_attempt_id = cc.call_attempt_id and cc.operator_id =  oo.operator_id)
+		JOIN (`case` as c, respondent as r, questionnaire as q, operator as co) on (a.case_id = c.case_id and a.respondent_id = r.respondent_id and q.questionnaire_id = c.questionnaire_id)
+		LEFT JOIN (call_attempt as cc, operator as oo) on (a.call_attempt_id = cc.call_attempt_id and cc.operator_id = oo.operator_id)
 		LEFT JOIN (`call` as ca, outcome as ou, operator as ooo) ON (ca.call_id = a.completed_call_id and ou.outcome_id = ca.outcome_id and ca.operator_id = ooo.operator_id)
 		WHERE c.case_id = '$case_id'
 		AND co.operator_id = '$operator_id'