diff --git a/websocket-sharp/Server/WebSocketServiceManager.cs b/websocket-sharp/Server/WebSocketServiceManager.cs
index da30dcc0..d6b618a7 100644
--- a/websocket-sharp/Server/WebSocketServiceManager.cs
+++ b/websocket-sharp/Server/WebSocketServiceManager.cs
@@ -542,7 +542,7 @@ namespace WebSocketSharp.Server
         throw new ArgumentException (msg, "path");
       }
 
-      path = HttpUtility.UrlDecode (path).TrimSlashFromEnd ();
+      path = path.TrimSlashFromEnd ();
 
       lock (_sync) {
         WebSocketServiceHost host;