diff --git a/CRM/Case/Form/Search.php b/CRM/Case/Form/Search.php
index 590132354b8e..3ca0ed016910 100644
--- a/CRM/Case/Form/Search.php
+++ b/CRM/Case/Form/Search.php
@@ -177,7 +177,7 @@ public function buildQuickForm() {
       $tasks = CRM_Case_Task::permissionedTaskTitles(CRM_Core_Permission::getPermission());
 
       if (!empty($this->_formValues['case_deleted'])) {
-        unset($tasks[CRM_Case_Task::DELETE]);
+        unset($tasks[CRM_Case_Task::TASK_DELETE]);
       }
       else {
         unset($tasks[CRM_Case_Task::RESTORE_CASES]);