diff --git a/src/UniTask.NetCoreSandbox/Program.cs b/src/UniTask.NetCoreSandbox/Program.cs
index 8067ab7..ef95a18 100644
--- a/src/UniTask.NetCoreSandbox/Program.cs
+++ b/src/UniTask.NetCoreSandbox/Program.cs
@@ -28,7 +28,7 @@ namespace NetCoreSandbox
             await FooAsync(10, cts.Token);
 
             // NG(Compiler Error)
-            await FooAsync(10);
+            // await FooAsync(10);