diff --git a/websocket-sharp/Server/WebSocketServiceManager.cs b/websocket-sharp/Server/WebSocketServiceManager.cs
index e4905c95..ad7c2ee9 100644
--- a/websocket-sharp/Server/WebSocketServiceManager.cs
+++ b/websocket-sharp/Server/WebSocketServiceManager.cs
@@ -297,25 +297,6 @@ namespace WebSocketSharp.Server
 
     #region Private Methods
 
-    private Dictionary<string, Dictionary<string, bool>> broadping (
-      byte[] frameAsBytes, TimeSpan timeout
-    )
-    {
-      var ret = new Dictionary<string, Dictionary<string, bool>> ();
-
-      foreach (var host in Hosts) {
-        if (_state != ServerState.Start) {
-          _log.Error ("The server is shutting down.");
-          break;
-        }
-
-        var res = host.Sessions.Broadping (frameAsBytes, timeout);
-        ret.Add (host.Path, res);
-      }
-
-      return ret;
-    }
-
     private bool canSet (out string message)
     {
       message = null;