diff --git a/samples/SampleApp/Startup.cs b/samples/SampleApp/Startup.cs
index 65462519d6..f6a9e33a64 100644
--- a/samples/SampleApp/Startup.cs
+++ b/samples/SampleApp/Startup.cs
@@ -1,4 +1,5 @@
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Http;
 using System;
 using System.Net.WebSockets;
 using System.Threading;