diff --git a/Tests/Helpers/Testably.Abstractions.TestHelpers/FileSystemTestsAttribute.cs b/Tests/Helpers/Testably.Abstractions.TestHelpers/FileSystemTestsAttribute.cs
index c6e7b7df..6b14269f 100644
--- a/Tests/Helpers/Testably.Abstractions.TestHelpers/FileSystemTestsAttribute.cs
+++ b/Tests/Helpers/Testably.Abstractions.TestHelpers/FileSystemTestsAttribute.cs
@@ -31,7 +31,7 @@ public ValueTask OnTestDiscovered(DiscoveredTestContext context)
 		    context.TestContext.Metadata.TestDetails.TestClassArguments[0] is FileSystemTestData
 			    .Real)
 		{
-			context.AddParallelConstraint(new NotInParallelConstraint(["RealFileSystem"]));
+			context.AddParallelConstraint(new NotInParallelConstraint([nameof(RealFileSystem)]));
 		}
 
 		return _completedTask;
diff --git a/Tests/Testably.Abstractions.Testing.Tests/FileSystem/FileStreamFactoryMockTests.cs b/Tests/Testably.Abstractions.Testing.Tests/FileSystem/FileStreamFactoryMockTests.cs
index a7354a34..fe90ecef 100644
--- a/Tests/Testably.Abstractions.Testing.Tests/FileSystem/FileStreamFactoryMockTests.cs
+++ b/Tests/Testably.Abstractions.Testing.Tests/FileSystem/FileStreamFactoryMockTests.cs
@@ -4,7 +4,7 @@
 
 namespace Testably.Abstractions.Testing.Tests.FileSystem;
 
-[NotInParallel(nameof(IDirectoryCleaner))]
+[NotInParallel(nameof(RealFileSystem))]
 public sealed class FileStreamFactoryMockTests : IDisposable
 {
 	#region Test Setup
diff --git a/Tests/Testably.Abstractions.Testing.Tests/FileSystem/FileSystemWatcherFactoryMockTests.cs b/Tests/Testably.Abstractions.Testing.Tests/FileSystem/FileSystemWatcherFactoryMockTests.cs
index 19bcdc60..1d3a29c8 100644
--- a/Tests/Testably.Abstractions.Testing.Tests/FileSystem/FileSystemWatcherFactoryMockTests.cs
+++ b/Tests/Testably.Abstractions.Testing.Tests/FileSystem/FileSystemWatcherFactoryMockTests.cs
@@ -3,7 +3,7 @@
 
 namespace Testably.Abstractions.Testing.Tests.FileSystem;
 
-[NotInParallel(nameof(IDirectoryCleaner))]
+[NotInParallel(nameof(RealFileSystem))]
 public sealed class FileSystemWatcherFactoryMockTests : IDisposable
 {
 	#region Test Setup
diff --git a/Tests/Testably.Abstractions.Testing.Tests/FileSystem/FileSystemWatcherMockTests.cs b/Tests/Testably.Abstractions.Testing.Tests/FileSystem/FileSystemWatcherMockTests.cs
index f2849da8..d771f5eb 100644
--- a/Tests/Testably.Abstractions.Testing.Tests/FileSystem/FileSystemWatcherMockTests.cs
+++ b/Tests/Testably.Abstractions.Testing.Tests/FileSystem/FileSystemWatcherMockTests.cs
@@ -4,7 +4,7 @@
 
 namespace Testably.Abstractions.Testing.Tests.FileSystem;
 
-[NotInParallel(nameof(IDirectoryCleaner))]
+[NotInParallel(nameof(RealFileSystem))]
 public sealed class FileSystemWatcherMockTests : IDisposable
 {
 	#region Test Setup
diff --git a/Tests/Testably.Abstractions.Testing.Tests/FileSystemInitializer/DirectoryCleanerTests.cs b/Tests/Testably.Abstractions.Testing.Tests/FileSystemInitializer/DirectoryCleanerTests.cs
index 9839cbc0..aa1eaa4d 100644
--- a/Tests/Testably.Abstractions.Testing.Tests/FileSystemInitializer/DirectoryCleanerTests.cs
+++ b/Tests/Testably.Abstractions.Testing.Tests/FileSystemInitializer/DirectoryCleanerTests.cs
@@ -5,7 +5,7 @@
 
 namespace Testably.Abstractions.Testing.Tests.FileSystemInitializer;
 
-[NotInParallel(nameof(IDirectoryCleaner))]
+[NotInParallel(nameof(RealFileSystem))]
 public class DirectoryCleanerTests
 {
 	#region Test Setup