diff --git a/src/MusicStore/Startup.cs b/src/MusicStore/Startup.cs
index 49ed4c23a0..961ba32c8d 100644
--- a/src/MusicStore/Startup.cs
+++ b/src/MusicStore/Startup.cs
@@ -1,5 +1,6 @@
 using Microsoft.AspNet;
 using Microsoft.AspNet.Http;
+using Microsoft.AspNet.Builder;
 using Microsoft.Framework.ConfigurationModel;
 using Microsoft.AspNet.DependencyInjection;
 using Microsoft.AspNet.DependencyInjection.Fallback;