diff --git a/SabreTools.Helper/Dats/Machine.cs b/SabreTools.Helper/Dats/Machine.cs
index 7daa2866..ab9740c1 100644
--- a/SabreTools.Helper/Dats/Machine.cs
+++ b/SabreTools.Helper/Dats/Machine.cs
@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 
 using SabreTools.Helper.Data;