diff --git a/source/Cosmos.Build.Windows/Global.cs b/source/Cosmos.Build.Windows/Global.cs
index a4349d95f..8e5911d64 100644
--- a/source/Cosmos.Build.Windows/Global.cs
+++ b/source/Cosmos.Build.Windows/Global.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
 using System.Text;