diff --git a/samples/CloudNative.CloudEvents.AspNetCoreSample/Program.cs b/samples/CloudNative.CloudEvents.AspNetCoreSample/Program.cs
index ad08eda..c75e741 100644
--- a/samples/CloudNative.CloudEvents.AspNetCoreSample/Program.cs
+++ b/samples/CloudNative.CloudEvents.AspNetCoreSample/Program.cs
@@ -17,3 +17,7 @@ var app = builder.Build();
 app.MapControllers();
 
 app.Run();
+
+// Generated `Program` class when using top-level statements
+// is internal by default. Make this `public` here for tests.
+public partial class Program { }
diff --git a/test/CloudNative.CloudEvents.IntegrationTests/AspNetCore/CloudEventControllerTests.cs b/test/CloudNative.CloudEvents.IntegrationTests/AspNetCore/CloudEventControllerTests.cs
index 2de9ae4..b59ecf2 100644
--- a/test/CloudNative.CloudEvents.IntegrationTests/AspNetCore/CloudEventControllerTests.cs
+++ b/test/CloudNative.CloudEvents.IntegrationTests/AspNetCore/CloudEventControllerTests.cs
@@ -13,11 +13,11 @@ using Xunit;
 
 namespace CloudNative.CloudEvents.IntegrationTests.AspNetCore
 {
-    public class CloudEventControllerTests : IClassFixture<WebApplicationFactory<Startup>>
+    public class CloudEventControllerTests : IClassFixture<WebApplicationFactory<Program>>
     {
-        private readonly WebApplicationFactory<Startup> _factory;
+        private readonly WebApplicationFactory<Program> _factory;
 
-        public CloudEventControllerTests(WebApplicationFactory<Startup> factory)
+        public CloudEventControllerTests(WebApplicationFactory<Program> factory)
         {
             _factory = factory;
         }