diff --git a/platform/modules/v1/controllers/ErpController.php b/platform/modules/v1/controllers/ErpController.php
index 228ef53..633d0df 100644
--- a/platform/modules/v1/controllers/ErpController.php
+++ b/platform/modules/v1/controllers/ErpController.php
@@ -231,7 +231,7 @@ class ErpController extends Controller
             'productSku' => $item['drug_no'],
             'quantity' => $erpQty,
             'paymentPrice' => $erpPaymentPrice,
-            'price' => round($originQty * $item['buy_price'], 2),
+            'price' => (string)round($originQty * $item['buy_price'], 2),
         ];
     }