diff --git a/src/Netclaw.Actors.Tests/Channels/Contracts/SessionBindingContractTests.cs b/src/Netclaw.Actors.Tests/Channels/Contracts/SessionBindingContractTests.cs
index abf3f698..c5a977d7 100644
--- a/src/Netclaw.Actors.Tests/Channels/Contracts/SessionBindingContractTests.cs
+++ b/src/Netclaw.Actors.Tests/Channels/Contracts/SessionBindingContractTests.cs
@@ -603,6 +603,8 @@ public async Task Button_approval_from_wrong_requester_posts_warning()
         ]);
 
         var actor = CreateBindingActor(sid, pipeline, detector);
+        await AwaitAssertAsync(() => Assert.NotNull(pipeline.CapturedOptions),
+            cancellationToken: ct);
         await AwaitAssertAsync(() =>
         {
             var texts = GetPostedTexts();
@@ -650,6 +652,8 @@ public async Task Text_approval_from_wrong_requester_posts_warning()
         ]);
 
         var actor = CreateBindingActor(sid, pipeline, detector);
+        await AwaitAssertAsync(() => Assert.NotNull(pipeline.CapturedOptions),
+            cancellationToken: ct);
         await AwaitAssertAsync(() =>
         {
             var texts = GetPostedTexts();