diff --git a/src/CSharp/EasyMicroservices.Laboratory.Tests/Engine/Net/HostHttpHandlerTest.cs b/src/CSharp/EasyMicroservices.Laboratory.Tests/Engine/Net/HostHttpHandlerTest.cs
index cfe66cb..f2fee4c 100644
--- a/src/CSharp/EasyMicroservices.Laboratory.Tests/Engine/Net/HostHttpHandlerTest.cs
+++ b/src/CSharp/EasyMicroservices.Laboratory.Tests/Engine/Net/HostHttpHandlerTest.cs
@@ -10,7 +10,8 @@ public class HostHttpHandlerTest : BaseHandlerTest
     {
         protected override BaseHandler GetHandler(ResourceManager resourceManager)
         {
-            return BaseHandler.CreateOSHandler(resourceManager);
+            return new HostHttpHandler(resourceManager);
+            //return BaseHandler.CreateOSHandler(resourceManager);
         }
     }
 }
diff --git a/src/CSharp/EasyMicroservices.Laboratory.Tests/Engine/Net/HttpHandlerTest.cs b/src/CSharp/EasyMicroservices.Laboratory.Tests/Engine/Net/HttpHandlerTest.cs
index 331be88..1e7f603 100644
--- a/src/CSharp/EasyMicroservices.Laboratory.Tests/Engine/Net/HttpHandlerTest.cs
+++ b/src/CSharp/EasyMicroservices.Laboratory.Tests/Engine/Net/HttpHandlerTest.cs
@@ -9,7 +9,8 @@ public class HttpHandlerTest : BaseHandlerTest
     {
         protected override BaseHandler GetHandler(ResourceManager resourceManager)
         {
-            return BaseHandler.CreateOSHandler(resourceManager);
+            return new HttpHandler(resourceManager);
+            //return BaseHandler.CreateOSHandler(resourceManager);
         }
     }
 }
\ No newline at end of file
diff --git a/src/CSharp/EasyMicroservices.Laboratory/Engine/Net/Http/HostHttpHandlerBase.cs b/src/CSharp/EasyMicroservices.Laboratory/Engine/Net/Http/HostHttpHandlerBase.cs
index 8e69bd3..429be23 100644
--- a/src/CSharp/EasyMicroservices.Laboratory/Engine/Net/Http/HostHttpHandlerBase.cs
+++ b/src/CSharp/EasyMicroservices.Laboratory/Engine/Net/Http/HostHttpHandlerBase.cs
@@ -75,7 +75,9 @@ public override void Stop()
         protected virtual async Task InternalStart(int port)
         {
             var builder = WebApplication.CreateBuilder();
-            builder.WebHost.UseUrls($"http://*:{port}");
+            builder.WebHost
+                .UseUrls($"http://*:{port}")
+                .UseKestrel();
             var app = builder.Build();
             app.Use(async (context, next) =>
             {