diff --git a/CRM/Admin/Form/ScheduleReminders.php b/CRM/Admin/Form/ScheduleReminders.php
index 882cc0b94e24..7218283ed351 100644
--- a/CRM/Admin/Form/ScheduleReminders.php
+++ b/CRM/Admin/Form/ScheduleReminders.php
@@ -695,8 +695,14 @@ public function parseActionSchedule($values) {
    * @return array
    */
   public function listTokens() {
-    $tokens = CRM_Core_SelectValues::contactTokens();
-    $tokens = array_merge(CRM_Core_SelectValues::activityTokens(), $tokens);
+    $tokenProcessor = new \Civi\Token\TokenProcessor(\Civi::dispatcher(), [
+      'controller' => get_class(),
+      'smarty' => FALSE,
+      'schema' => ['activityId'],
+    ]);
+    $tokens = $tokenProcessor->listTokens();
+
+    $tokens = array_merge(CRM_Core_SelectValues::contactTokens(), $tokens);
     $tokens = array_merge(CRM_Core_SelectValues::eventTokens(), $tokens);
     $tokens = array_merge(CRM_Core_SelectValues::membershipTokens(), $tokens);
     $tokens = array_merge(CRM_Core_SelectValues::contributionTokens(), $tokens);