1 files changed, 4 insertions, 0 deletions

diff --git a/src/WixToolset.Core.WindowsInstaller/Differ.cs b/src/WixToolset.Core.WindowsInstaller/Differ.cs
index 32172ffd..0e1a7315 100644
--- a/src/WixToolset.Core.WindowsInstaller/Differ.cs
+++ b/src/WixToolset.Core.WindowsInstaller/Differ.cs
@@ -1,5 +1,7 @@
 // Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
 
+#if DELETE
+
 namespace WixToolset.Core.WindowsInstaller
 {
     using System;
@@ -604,3 +606,5 @@ namespace WixToolset.Core.WindowsInstaller
         }
     }
 }
+
+#endif