diff --git a/webht/third_party/paypal/models/note_model.php b/webht/third_party/paypal/models/note_model.php
index daaa80bf..35655fba 100644
--- a/webht/third_party/paypal/models/note_model.php
+++ b/webht/third_party/paypal/models/note_model.php
@@ -129,6 +129,7 @@ class Note_model extends CI_Model {
         $search_key = trim($search_key);
         if (!empty($search_key)) {
             $search_sql.=" AND ( pn.pn_txn_id = '$search_key'
+                                    OR pn_reference_id = '$search_key'
                                     OR pn.pn_invoice like '%$search_key%'
                                     OR pn.pn_custom like '%$search_key%'
                                     OR pn.pn_item_name like '%$search_key%'