diff --git a/Server/Core/Helper/UPnP.cs b/Server/Core/Helper/UPnP.cs
index 56da4292..ceda58ba 100644
--- a/Server/Core/Helper/UPnP.cs
+++ b/Server/Core/Helper/UPnP.cs
@@ -1,7 +1,6 @@
 using System.Collections.Generic;
 using System.Threading;
 using Mono.Nat;
-using System.Windows.Forms;
 
 namespace xServer.Core.Helper
 {