diff --git a/websocket-sharp/Opcode.cs b/websocket-sharp/Opcode.cs
index 90e98383..362fcfea 100644
--- a/websocket-sharp/Opcode.cs
+++ b/websocket-sharp/Opcode.cs
@@ -31,42 +31,36 @@ using System;
 namespace WebSocketSharp
 {
   /// <summary>
-  /// Contains the values of the opcode that indicates the type of a WebSocket frame.
+  /// Contains the values of the opcode that indicate the type of a WebSocket frame.
   /// </summary>
   /// <remarks>
-  /// The values of the opcode are defined in
+  /// The values of this enumeration are defined in
   /// <see href="http://tools.ietf.org/html/rfc6455#section-5.2">Section 5.2</see> of RFC 6455.
   /// </remarks>
   public enum Opcode : byte
   {
     /// <summary>
-    /// Equivalent to numeric value 0.
-    /// Indicates a continuation frame.
+    /// Equivalent to numeric value 0. Indicates a continuation frame.
     /// </summary>
     Cont = 0x0,
     /// <summary>
-    /// Equivalent to numeric value 1.
-    /// Indicates a text frame.
+    /// Equivalent to numeric value 1. Indicates a text frame.
     /// </summary>
     Text = 0x1,
     /// <summary>
-    /// Equivalent to numeric value 2.
-    /// Indicates a binary frame.
+    /// Equivalent to numeric value 2. Indicates a binary frame.
     /// </summary>
     Binary = 0x2,
     /// <summary>
-    /// Equivalent to numeric value 8.
-    /// Indicates a connection close frame.
+    /// Equivalent to numeric value 8. Indicates a connection close frame.
     /// </summary>
     Close = 0x8,
     /// <summary>
-    /// Equivalent to numeric value 9.
-    /// Indicates a ping frame.
+    /// Equivalent to numeric value 9. Indicates a ping frame.
     /// </summary>
     Ping = 0x9,
     /// <summary>
-    /// Equivalent to numeric value 10.
-    /// Indicates a pong frame.
+    /// Equivalent to numeric value 10. Indicates a pong frame.
     /// </summary>
     Pong = 0xa
   }