diff --git a/websocket-sharp/Server/WebSocketSessionManager.cs b/websocket-sharp/Server/WebSocketSessionManager.cs
index 88d4f921..c80e0886 100644
--- a/websocket-sharp/Server/WebSocketSessionManager.cs
+++ b/websocket-sharp/Server/WebSocketSessionManager.cs
@@ -202,6 +202,7 @@ namespace WebSocketSharp.Server
           throw new ArgumentException ("An empty string.", "id");
 
         IWebSocketSession session;
+
         tryGetSession (id, out session);
 
         return session;