diff --git a/MyCode.Project.Services/Implementation/PurchaseOrder/PurchaseOrderService.cs b/MyCode.Project.Services/Implementation/PurchaseOrder/PurchaseOrderService.cs
index 9b60f13..e236942 100644
--- a/MyCode.Project.Services/Implementation/PurchaseOrder/PurchaseOrderService.cs
+++ b/MyCode.Project.Services/Implementation/PurchaseOrder/PurchaseOrderService.cs
@@ -385,7 +385,7 @@ namespace MyCode.Project.Services.Implementation
                                     ida = purchaseOrder.Id;
                                     purchaseOrder.SupplierId = t.SupplierId;
                                     purchaseOrder.SupplierName = item["FSupplierId.FShortName"];
-                                    if (purchaseOrder.SupplierName.Trim() == "")
+                                    if (purchaseOrder.SupplierName == null || purchaseOrder.SupplierName.Trim() == "")
                                         purchaseOrder.SupplierName = item["FSupplierId.FNAME"];
                                     purchaseOrder.FCancelStatus = item["FCancelStatus"];
                                     purchaseOrder.SettlementCcurrency = item["FSettleCurrId.fname"];
@@ -409,7 +409,8 @@ namespace MyCode.Project.Services.Implementation
                                 {
                                     oldOrder.SupplierId = t.SupplierId;
                                     oldOrder.SupplierName = item["FSupplierId.FShortName"];
-                                    if (oldOrder.SupplierName.Trim()=="")
+
+                                    if (oldOrder.SupplierName ==null || oldOrder.SupplierName.Trim()=="")
                                         oldOrder.SupplierName = item["FSupplierId.FNAME"];
                                     oldOrder.FCancelStatus = item["FCancelStatus"];
                                     oldOrder.SettlementCcurrency = item["FSettleCurrId.fname"];