diff --git a/src/Microsoft.AspNet.Server.Kestrel/Http/Connection.cs b/src/Microsoft.AspNet.Server.Kestrel/Http/Connection.cs
index 89837db215..6baf4864bb 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/Http/Connection.cs
+++ b/src/Microsoft.AspNet.Server.Kestrel/Http/Connection.cs
@@ -2,9 +2,6 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
-using System.Diagnostics;
-using System.Net.Sockets;
-using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Server.Kestrel.Networking;
 
diff --git a/src/Microsoft.AspNet.Server.Kestrel/Http/Frame.cs b/src/Microsoft.AspNet.Server.Kestrel/Http/Frame.cs
index 0697149351..ca1d2c1bc5 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/Http/Frame.cs
+++ b/src/Microsoft.AspNet.Server.Kestrel/Http/Frame.cs
@@ -4,9 +4,7 @@
 using Microsoft.AspNet.HttpFeature;
 using System;
 using System.Collections.Generic;
-using System.Globalization;
 using System.Linq;
-using System.Net;
 using System.Text;
 using System.Threading.Tasks;
 
diff --git a/src/Microsoft.AspNet.Server.Kestrel/Http/Listener.cs b/src/Microsoft.AspNet.Server.Kestrel/Http/Listener.cs
index 95995f9100..3114548b81 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/Http/Listener.cs
+++ b/src/Microsoft.AspNet.Server.Kestrel/Http/Listener.cs
@@ -4,7 +4,6 @@
 using Microsoft.AspNet.Server.Kestrel.Networking;
 using System;
 using System.Net;
-using System.Text;
 using System.Threading.Tasks;
 
 namespace Microsoft.AspNet.Server.Kestrel.Http
diff --git a/src/Microsoft.AspNet.Server.Kestrel/Http/MemoryPool.cs b/src/Microsoft.AspNet.Server.Kestrel/Http/MemoryPool.cs
index f97675f776..3b7c247a1c 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/Http/MemoryPool.cs
+++ b/src/Microsoft.AspNet.Server.Kestrel/Http/MemoryPool.cs
@@ -3,7 +3,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Net.Sockets;
 
 namespace Microsoft.AspNet.Server.Kestrel.Http
 {
diff --git a/src/Microsoft.AspNet.Server.Kestrel/Http/MessageBody.cs b/src/Microsoft.AspNet.Server.Kestrel/Http/MessageBody.cs
index 0ade9006fb..a2603bf8fb 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/Http/MessageBody.cs
+++ b/src/Microsoft.AspNet.Server.Kestrel/Http/MessageBody.cs
@@ -3,7 +3,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Threading;
 
 namespace Microsoft.AspNet.Server.Kestrel.Http
 {
diff --git a/src/Microsoft.AspNet.Server.Kestrel/Http/SocketOutput.cs b/src/Microsoft.AspNet.Server.Kestrel/Http/SocketOutput.cs
index d33719c57d..db1922cc0a 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/Http/SocketOutput.cs
+++ b/src/Microsoft.AspNet.Server.Kestrel/Http/SocketOutput.cs
@@ -3,9 +3,6 @@
 
 using Microsoft.AspNet.Server.Kestrel.Networking;
 using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Net.Sockets;
 using System.Runtime.InteropServices;
 
 namespace Microsoft.AspNet.Server.Kestrel.Http
diff --git a/src/Microsoft.AspNet.Server.Kestrel/KestrelEngine.cs b/src/Microsoft.AspNet.Server.Kestrel/KestrelEngine.cs
index add92c5f37..6bebfd1239 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/KestrelEngine.cs
+++ b/src/Microsoft.AspNet.Server.Kestrel/KestrelEngine.cs
@@ -3,7 +3,6 @@
 
 using System;
 using Microsoft.AspNet.Server.Kestrel.Networking;
-using System.Threading;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Server.Kestrel.Http;
diff --git a/src/Microsoft.AspNet.Server.Kestrel/Networking/UcAsyncHandle.cs b/src/Microsoft.AspNet.Server.Kestrel/Networking/UcAsyncHandle.cs
index d09b815e75..f1a126eac9 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/Networking/UcAsyncHandle.cs
+++ b/src/Microsoft.AspNet.Server.Kestrel/Networking/UcAsyncHandle.cs
@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
-using System.Runtime.InteropServices;
 
 namespace Microsoft.AspNet.Server.Kestrel.Networking
 {
diff --git a/src/Microsoft.AspNet.Server.Kestrel/Networking/UvStreamHandle.cs b/src/Microsoft.AspNet.Server.Kestrel/Networking/UvStreamHandle.cs
index 7f2ff901e7..feb9dc4f6f 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/Networking/UvStreamHandle.cs
+++ b/src/Microsoft.AspNet.Server.Kestrel/Networking/UvStreamHandle.cs
@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
-using System.Runtime.InteropServices;
 
 namespace Microsoft.AspNet.Server.Kestrel.Networking
 {