diff --git a/websocket-sharp/WebSocket.cs b/websocket-sharp/WebSocket.cs
index a99a5aa3..21d51953 100644
--- a/websocket-sharp/WebSocket.cs
+++ b/websocket-sharp/WebSocket.cs
@@ -2321,8 +2321,7 @@ namespace WebSocketSharp
 
       _readyState = WebSocketState.Closed;
 
-      var e = new CloseEventArgs (payloadData);
-      e.WasClean = res;
+      var e = new CloseEventArgs (payloadData, res);
 
       try {
         OnClose.Emit (this, e);