diff --git a/websocket-sharp/Net/EndPointListener.cs b/websocket-sharp/Net/EndPointListener.cs
index 75bc7ce3..50458972 100644
--- a/websocket-sharp/Net/EndPointListener.cs
+++ b/websocket-sharp/Net/EndPointListener.cs
@@ -596,55 +596,6 @@ namespace WebSocketSharp.Net
       leaveIfNoPrefix ();
     }
 
-    public void RemovePrefix (HttpListenerPrefix prefix, HttpListener listener)
-    {
-      List<HttpListenerPrefix> current, future;
-      if (prefix.Host == "*") {
-        do {
-          current = _unhandled;
-          if (current == null)
-            break;
-
-          future = new List<HttpListenerPrefix> (current);
-          if (!removeSpecial (future, prefix))
-            break; // The prefix wasn't found.
-        }
-        while (Interlocked.CompareExchange (ref _unhandled, future, current) != current);
-
-        leaveIfNoPrefix ();
-        return;
-      }
-
-      if (prefix.Host == "+") {
-        do {
-          current = _all;
-          if (current == null)
-            break;
-
-          future = new List<HttpListenerPrefix> (current);
-          if (!removeSpecial (future, prefix))
-            break; // The prefix wasn't found.
-        }
-        while (Interlocked.CompareExchange (ref _all, future, current) != current);
-
-        leaveIfNoPrefix ();
-        return;
-      }
-
-      Dictionary<HttpListenerPrefix, HttpListener> prefs, prefs2;
-      do {
-        prefs = _prefixes;
-        if (!prefs.ContainsKey (prefix))
-          break;
-
-        prefs2 = new Dictionary<HttpListenerPrefix, HttpListener> (prefs);
-        prefs2.Remove (prefix);
-      }
-      while (Interlocked.CompareExchange (ref _prefixes, prefs2, prefs) != prefs);
-
-      leaveIfNoPrefix ();
-    }
-
     #endregion
   }
 }