diff --git a/Service/Execute/Step/CancelState.cs b/Service/Execute/Step/CancelState.cs
index 04b389e..a8e8ff1 100644
--- a/Service/Execute/Step/CancelState.cs
+++ b/Service/Execute/Step/CancelState.cs
@@ -25,7 +25,7 @@ public class CancelState : IState
     {
         _log.Info($"'goto cancel");
         machine.CancelFlag = false;
-        if (machine.SwapOrderBatteryInfo.swapAmtOrder != null)
+        if (machine.SwapOrderBatteryInfo!=null && machine.SwapOrderBatteryInfo.swapAmtOrder != null)
         {
             machine.SwapOrderBatteryInfo.swapAmtOrder.Status = (byte)InfoEnum.AmtOrderStatus.SwapFail;
             _swapAmtOrderRepository.Update(machine.SwapOrderBatteryInfo.swapAmtOrder);