diff --git a/src/request.dispatcher.tests/_fixtures/StreamOpenBehavior.cs b/src/request.dispatcher.tests/_fixtures/StreamOpenBehavior.cs
index 657911e..d5ded39 100644
--- a/src/request.dispatcher.tests/_fixtures/StreamOpenBehavior.cs
+++ b/src/request.dispatcher.tests/_fixtures/StreamOpenBehavior.cs
@@ -1,12 +1,14 @@
 // Copyright (c) The Geekeey Authors
 // SPDX-License-Identifier: EUPL-1.2
 
+using System.Runtime.CompilerServices;
+
 namespace Geekeey.Request.Dispatcher.Tests;
 
 public class StreamOpenBehavior<TRequest, TResponse>(StreamTestTracker tracker) : IStreamRequestBehavior<TRequest, TResponse>
 where TRequest : IStreamRequest<TResponse>
 {
-	public async IAsyncEnumerable<TResponse> HandleAsync(TRequest request, StreamHandlerDelegate<TResponse> next, CancellationToken cancellationToken)
+	public async IAsyncEnumerable<TResponse> HandleAsync(TRequest request, StreamHandlerDelegate<TResponse> next, [EnumeratorCancellation] CancellationToken cancellationToken)
 	{
 		tracker.Executed = true;
 		await foreach (var response in next(request, cancellationToken))