diff --git a/assets/Squidex.Assets.Tests/DelegateAssetFileTests.cs b/assets/Squidex.Assets.Tests/DelegateAssetFileTests.cs
deleted file mode 100644
index 8eab358..0000000
--- a/assets/Squidex.Assets.Tests/DelegateAssetFileTests.cs
+++ /dev/null
@@ -1,26 +0,0 @@
-// ==========================================================================
-//  Squidex Headless CMS
-// ==========================================================================
-//  Copyright (c) Squidex UG (haftungsbeschraenkt)
-//  All rights reserved. Licensed under the MIT license.
-// ==========================================================================
-
-using Newtonsoft.Json;
-using Xunit;
-
-namespace Squidex.Assets;
-
-public class DelegateAssetFileTests
-{
-    [Fact]
-    public void Should_be_serializable_to_json()
-    {
-        var source =
-            new DelegateAssetFile("fileName", "file/type", 1024, ct =>
-                new ValueTask<Stream>(new MemoryStream()));
-
-        var deserialized = JsonConvert.DeserializeObject<DelegateAssetFile>(JsonConvert.SerializeObject(source));
-
-        Assert.Equal(source.FileName, deserialized?.FileName);
-    }
-}