diff --git a/src/Microsoft.AspNet.Session/SessionDefaults.cs b/src/Microsoft.AspNet.Session/SessionDefaults.cs
index 0fc76225ee..1fb6859cab 100644
--- a/src/Microsoft.AspNet.Session/SessionDefaults.cs
+++ b/src/Microsoft.AspNet.Session/SessionDefaults.cs
@@ -1,8 +1,6 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
-using System;
-
 namespace Microsoft.AspNet.Session
 {
     /// <summary>
diff --git a/src/Microsoft.AspNet.Session/SessionMiddleware.cs b/src/Microsoft.AspNet.Session/SessionMiddleware.cs
index dffbe01b76..9dee803d72 100644
--- a/src/Microsoft.AspNet.Session/SessionMiddleware.cs
+++ b/src/Microsoft.AspNet.Session/SessionMiddleware.cs
@@ -2,8 +2,6 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Security.Cryptography;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
diff --git a/src/Microsoft.AspNet.Session/SipHash.cs b/src/Microsoft.AspNet.Session/SipHash.cs
index 219194f6ab..18afddf1e9 100644
--- a/src/Microsoft.AspNet.Session/SipHash.cs
+++ b/src/Microsoft.AspNet.Session/SipHash.cs
@@ -1,8 +1,6 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
-using System;
-
 namespace Microsoft.AspNet.Session
 {
     // A byte[] equality comparer based on the SipHash-2-4 algorithm. Key differences: