diff --git a/webht/third_party/paypal/controllers/index.php b/webht/third_party/paypal/controllers/index.php
index 1fd3f0f5..196519f2 100644
--- a/webht/third_party/paypal/controllers/index.php
+++ b/webht/third_party/paypal/controllers/index.php
@@ -1081,7 +1081,7 @@ class Index extends CI_Controller {
         }
         $ssje = $this->Paypal_model->get_ssje($paypal_msg->pn_mc_gross, '15002', mb_strtoupper($paypal_msg->pn_mc_currency));
         $ht_memo = '交易号(自动录入):' . $paypal_msg->pn_txn_id;
-        $USD_amount = $this->Paypal_model->get_USD($item->pn_mc_gross, $item->pn_mc_currency);
+        $USD_amount = $this->Paypal_model->get_USD($paypal_msg->pn_mc_gross, $paypal_msg->pn_mc_currency);
         if (false == $this->Paypal_model->if_biz_gai_exists($paypal_msg->pn_txn_id) ) {
             if ( ! empty($ht_tp_order)) {
                 $this->Paypal_model->update_biz_coli_state($ht_tp_order->COLI_SN, 13);