diff --git a/app/views/consultation/admin/cancel_slots.php b/app/views/consultation/admin/cancel_slots.php
index cb9679e30cff681c88fcd59495793d3a85259aab..9f7facb5b291397fd623bd18060bc000f14444a6 100644
--- a/app/views/consultation/admin/cancel_slots.php
+++ b/app/views/consultation/admin/cancel_slots.php
@@ -1,5 +1,6 @@
 <form action="<?= $action ?>" method="post" class="default">
     <?= CSRFProtection::tokenTag() ?>
+    <input type="hidden" name="cancel" value="1">
 
     <?= addHiddenFields('slot-id', $slots->map(function ($slot) {
         return "{$slot->block_id}-{$slot->id}";