diff --git a/lib/src/channel.dart b/lib/src/channel.dart
index 4cd368c..0344d1d 100644
--- a/lib/src/channel.dart
+++ b/lib/src/channel.dart
@@ -13,9 +13,9 @@ import 'copy/web_socket_impl.dart';
 
 /// A [StreamChannel] that communicates over a WebSocket.
 ///
-/// This is implemented by classes that use `dart:io` and `dart:html`. The [new
-/// WebSocketChannel] constructor can also be used on any platform to connect to
-/// use the WebSocket protocol over a pre-existing channel.
+/// This is implemented by classes that use `dart:io` and `dart:html`. The
+/// [new WebSocketChannel] constructor can also be used on any platform to
+/// connect to use the WebSocket protocol over a pre-existing channel.
 ///
 /// All implementations emit [WebSocketChannelException]s. These exceptions wrap
 /// the native exception types where possible.
diff --git a/lib/src/copy/web_socket_impl.dart b/lib/src/copy/web_socket_impl.dart
index 8996619..e231ee3 100644
--- a/lib/src/copy/web_socket_impl.dart
+++ b/lib/src/copy/web_socket_impl.dart
@@ -23,11 +23,6 @@ import 'io_sink.dart';
 import 'web_socket.dart';
 
 const String webSocketGUID = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
-const String _webSocketGUID = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
-const String _clientNoContextTakeover = "client_no_context_takeover";
-const String _serverNoContextTakeover = "server_no_context_takeover";
-const String _clientMaxWindowBits = "client_max_window_bits";
-const String _serverMaxWindowBits = "server_max_window_bits";
 
 final _random = new Random();