diff --git a/websocket-sharp/Server/WebSocketServer.cs b/websocket-sharp/Server/WebSocketServer.cs
index 55a55f5c..f0b9ba16 100644
--- a/websocket-sharp/Server/WebSocketServer.cs
+++ b/websocket-sharp/Server/WebSocketServer.cs
@@ -1014,101 +1014,6 @@ namespace WebSocketSharp.Server
 
     #region Public Methods
 
-    /// <summary>
-    /// Adds a WebSocket service with the specified behavior, path,
-    /// and delegate.
-    /// </summary>
-    /// <param name="path">
-    ///   <para>
-    ///   A <see cref="string"/> that represents an absolute path to
-    ///   the service to add.
-    ///   </para>
-    ///   <para>
-    ///   / is trimmed from the end of the string if present.
-    ///   </para>
-    /// </param>
-    /// <param name="creator">
-    ///   <para>
-    ///   A <c>Func&lt;TBehavior&gt;</c> delegate.
-    ///   </para>
-    ///   <para>
-    ///   It invokes the method called when creating a new session
-    ///   instance for the service.
-    ///   </para>
-    ///   <para>
-    ///   The method must create a new instance of the specified
-    ///   behavior class and return it.
-    ///   </para>
-    /// </param>
-    /// <typeparam name="TBehavior">
-    ///   <para>
-    ///   The type of the behavior for the service.
-    ///   </para>
-    ///   <para>
-    ///   It must inherit the <see cref="WebSocketBehavior"/> class.
-    ///   </para>
-    /// </typeparam>
-    /// <exception cref="ArgumentNullException">
-    ///   <para>
-    ///   <paramref name="path"/> is <see langword="null"/>.
-    ///   </para>
-    ///   <para>
-    ///   -or-
-    ///   </para>
-    ///   <para>
-    ///   <paramref name="creator"/> is <see langword="null"/>.
-    ///   </para>
-    /// </exception>
-    /// <exception cref="ArgumentException">
-    ///   <para>
-    ///   <paramref name="path"/> is an empty string.
-    ///   </para>
-    ///   <para>
-    ///   -or-
-    ///   </para>
-    ///   <para>
-    ///   <paramref name="path"/> is not an absolute path.
-    ///   </para>
-    ///   <para>
-    ///   -or-
-    ///   </para>
-    ///   <para>
-    ///   <paramref name="path"/> includes either or both
-    ///   query and fragment components.
-    ///   </para>
-    ///   <para>
-    ///   -or-
-    ///   </para>
-    ///   <para>
-    ///   <paramref name="path"/> is already in use.
-    ///   </para>
-    /// </exception>
-    [Obsolete ("This method will be removed. Use added one instead.")]
-    public void AddWebSocketService<TBehavior> (
-      string path, Func<TBehavior> creator
-    )
-      where TBehavior : WebSocketBehavior
-    {
-      if (path == null)
-        throw new ArgumentNullException ("path");
-
-      if (creator == null)
-        throw new ArgumentNullException ("creator");
-
-      if (path.Length == 0)
-        throw new ArgumentException ("An empty string.", "path");
-
-      if (path[0] != '/')
-        throw new ArgumentException ("Not an absolute path.", "path");
-
-      if (path.IndexOfAny (new[] { '?', '#' }) > -1) {
-        var msg = "It includes either or both query and fragment components.";
-        throw new ArgumentException (msg, "path");
-      }
-
-      _services.Add<TBehavior> (path, creator);
-    }
-
     /// <summary>
     /// Adds a WebSocket service with the specified behavior and path.
     /// </summary>