diff --git a/CRM/Mailing/BAO/Mailing.php b/CRM/Mailing/BAO/Mailing.php
index 7e7d8ef8dd5d..f0ced3b8d881 100644
--- a/CRM/Mailing/BAO/Mailing.php
+++ b/CRM/Mailing/BAO/Mailing.php
@@ -1775,7 +1775,7 @@ public static function replaceGroups($mailingId, $type, $entity, $entityIds) {
    */
   public static function getMailingHash($id) {
     $hash = NULL;
-    if (Civi::settings()->get('hash_mailing_url')) {
+    if (Civi::settings()->get('hash_mailing_url') && !empty($id)) {
       $hash = CRM_Core_DAO::getFieldValue('CRM_Mailing_BAO_Mailing', $id, 'hash', 'id');
     }
     return $hash;