diff --git a/test/WebSites/CorsMiddlewareWebSite/Startup.cs b/test/WebSites/CorsMiddlewareWebSite/Startup.cs
index 33768e1858..cc4770292f 100644
--- a/test/WebSites/CorsMiddlewareWebSite/Startup.cs
+++ b/test/WebSites/CorsMiddlewareWebSite/Startup.cs
@@ -23,6 +23,7 @@ namespace CorsMiddlewareWebSite
         {
             var host = new WebHostBuilder()
                 .UseDefaultHostingConfiguration(args)
+                .UseKestrel()
                 .UseIISPlatformHandlerUrl()
                 .UseStartup<Startup>()
                 .Build();
diff --git a/test/WebSites/CorsMiddlewareWebSite/hosting.json b/test/WebSites/CorsMiddlewareWebSite/hosting.json
deleted file mode 100644
index 6a93dbafa8..0000000000
--- a/test/WebSites/CorsMiddlewareWebSite/hosting.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-  "server": "Microsoft.AspNetCore.Server.Kestrel"
-}