diff --git a/Assets/Scripts/Controller/OperationController.cs b/Assets/Scripts/Controller/OperationController.cs
index 44b39142..61fade8c 100644
--- a/Assets/Scripts/Controller/OperationController.cs
+++ b/Assets/Scripts/Controller/OperationController.cs
@@ -117,7 +117,7 @@ public class OperationController : MonoSingleton<OperationController>
     public void Clear()
     {
         index = -1;
-        curAction.Deinit();
+        curAction?.Deinit();
         operation = null;
         steps.Clear();
         curOperations.Clear();