diff --git a/test/WIP/YavscWorkInProgress.cs b/test/WIP/YavscWorkInProgress.cs
index ca239f48..784be24e 100644
--- a/test/WIP/YavscWorkInProgress.cs
+++ b/test/WIP/YavscWorkInProgress.cs
@@ -6,7 +6,6 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Net;
-using System.Security;
 using System.Text;
 using System.Threading.Tasks;
 using Xunit;