diff --git a/src/Microsoft.Net.Http.Server/Overlapped/PreAllocatedOverlapped.cs b/src/Microsoft.Net.Http.Server/Overlapped/PreAllocatedOverlapped.cs
index 7d30b4e248..0ad6b902bf 100644
--- a/src/Microsoft.Net.Http.Server/Overlapped/PreAllocatedOverlapped.cs
+++ b/src/Microsoft.Net.Http.Server/Overlapped/PreAllocatedOverlapped.cs
@@ -2,7 +2,7 @@
 using System;
 namespace System.Threading
 {
-    public sealed class PreAllocatedOverlapped : IDisposable, IDeferredDisposable
+    internal sealed class PreAllocatedOverlapped : IDisposable, IDeferredDisposable
     {
         internal readonly ThreadPoolBoundHandleOverlapped _overlapped;
         private DeferredDisposableLifetime<PreAllocatedOverlapped> _lifetime;
diff --git a/src/Microsoft.Net.Http.Server/Overlapped/ThreadPoolBoundHandle.cs b/src/Microsoft.Net.Http.Server/Overlapped/ThreadPoolBoundHandle.cs
index 4356a57f7a..0c2453c0f2 100644
--- a/src/Microsoft.Net.Http.Server/Overlapped/ThreadPoolBoundHandle.cs
+++ b/src/Microsoft.Net.Http.Server/Overlapped/ThreadPoolBoundHandle.cs
@@ -3,7 +3,7 @@ using System;
 using System.Runtime.InteropServices;
 namespace System.Threading
 {
-    public sealed class ThreadPoolBoundHandle : IDisposable
+    internal sealed class ThreadPoolBoundHandle : IDisposable
     {
         private readonly SafeHandle _handle;
         private bool _isDisposed;