diff --git a/src/Microsoft.AspNet.Authentication/AuthenticationHandler.cs b/src/Microsoft.AspNet.Authentication/AuthenticationHandler.cs
index e2c619b39e..0e768cf841 100644
--- a/src/Microsoft.AspNet.Authentication/AuthenticationHandler.cs
+++ b/src/Microsoft.AspNet.Authentication/AuthenticationHandler.cs
@@ -10,7 +10,6 @@ using System.Threading.Tasks;
 using Microsoft.AspNet.Authentication.DataHandler.Encoder;
 using Microsoft.AspNet.Http;
 using Microsoft.AspNet.Http.Authentication;
-using Microsoft.AspNet.Http.Interfaces.Authentication;
 using Microsoft.Framework.Logging;
 
 namespace Microsoft.AspNet.Authentication
diff --git a/src/Microsoft.AspNet.Authentication/AutomaticAuthenticationHandler.cs b/src/Microsoft.AspNet.Authentication/AutomaticAuthenticationHandler.cs
index d91fadfcad..f67f2a908d 100644
--- a/src/Microsoft.AspNet.Authentication/AutomaticAuthenticationHandler.cs
+++ b/src/Microsoft.AspNet.Authentication/AutomaticAuthenticationHandler.cs
@@ -4,7 +4,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
-using Microsoft.AspNet.Http.Interfaces.Authentication;
+using Microsoft.AspNet.Http.Authentication;
 
 namespace Microsoft.AspNet.Authentication
 {
diff --git a/src/Microsoft.AspNet.Authentication/HttpContextExtensions.cs b/src/Microsoft.AspNet.Authentication/HttpContextExtensions.cs
index 2f6b0e4d34..e378934cbc 100644
--- a/src/Microsoft.AspNet.Authentication/HttpContextExtensions.cs
+++ b/src/Microsoft.AspNet.Authentication/HttpContextExtensions.cs
@@ -3,7 +3,7 @@
 
 using Microsoft.AspNet.Http;
 using Microsoft.AspNet.Http.Core.Authentication;
-using Microsoft.AspNet.Http.Interfaces.Authentication;
+using Microsoft.AspNet.Http.Authentication;
 
 namespace Microsoft.AspNet.Authentication
 {