diff --git a/service/repositories/order.go b/service/repositories/order.go
index 54c7e4b6..39c5bce5 100644
--- a/service/repositories/order.go
+++ b/service/repositories/order.go
@@ -411,7 +411,7 @@ func (d *defaultOrder) Invoice(ctx context.Context, in *InvoiceReq) (res *Invoic
 			productNum := orderProduct.PurchaseQuantity.Current.(string)
 			var productNumStr = productNum
 
-			var productsInfo = fmt.Sprintf(model00301, orderProduct.ProductName, price, productNumStr, orderProduct.ProductWebsiteUnit, priceTotal)
+			var productsInfo = fmt.Sprintf(model00301, orderProduct.ProductName, price, productNumStr, orderProduct.ProductWebsiteUnit.Complex, priceTotal)
 			products = products + productsInfo
 		}
 		model003 = fmt.Sprintf(constants.INVOICE_TEMPLATE_03, products)