diff --git a/websocket-sharp/Server/HttpServer.cs b/websocket-sharp/Server/HttpServer.cs
index f16d6479..d3964d14 100644
--- a/websocket-sharp/Server/HttpServer.cs
+++ b/websocket-sharp/Server/HttpServer.cs
@@ -346,13 +346,8 @@ namespace WebSocketSharp.Server
 
       set {
         lock (_sync) {
-          string msg;
-
-          if (!canSet (out msg)) {
-            _log.Warn (msg);
-
+          if (!canSet ())
             return;
-          }
 
           _listener.AuthenticationSchemes = value;
         }