diff --git a/CRM/Event/Form/ManageEvent/Registration.php b/CRM/Event/Form/ManageEvent/Registration.php
index 6b0ec5791153..5894c01ec293 100644
--- a/CRM/Event/Form/ManageEvent/Registration.php
+++ b/CRM/Event/Form/ManageEvent/Registration.php
@@ -172,6 +172,12 @@ public function setDefaultValues() {
     return $defaults;
   }
 
+  /**
+   * Prevent tokens within URLs on comfirm_email_text from being munged.
+   */
+  protected function getFieldsToExcludeFromPurification(): array {
+    return ['confirm_email_text'];
+  }
   /**
    * Fix what blocks to show/hide based on the default values set
    *
diff --git a/CRM/Event/Form/Participant.php b/CRM/Event/Form/Participant.php
index b80f6de2e2b4..c0d63932abf9 100644
--- a/CRM/Event/Form/Participant.php
+++ b/CRM/Event/Form/Participant.php
@@ -2091,4 +2091,11 @@ private function buildAmount(): void {
     $this->assign('priceSet', $this->_priceSet);
   }
 
+  /**
+   * Prevent tokens within URLs on comfirm_email_text from being munged.
+   */
+  protected function getFieldsToExcludeFromPurification(): array {
+    return ['receipt_text'];
+  }
+
 }