diff --git a/websocket-sharp/Server/WebSocketSessionManager.cs b/websocket-sharp/Server/WebSocketSessionManager.cs
index c48488f9..8ffb1082 100644
--- a/websocket-sharp/Server/WebSocketSessionManager.cs
+++ b/websocket-sharp/Server/WebSocketSessionManager.cs
@@ -1165,8 +1165,10 @@ namespace WebSocketSharp.Server
     public void SendTo (byte[] data, string id)
     {
       IWebSocketSession session;
+
       if (!TryGetSession (id, out session)) {
         var msg = "The session could not be found.";
+
         throw new InvalidOperationException (msg);
       }