1 files changed, 1 insertions, 1 deletions

diff --git a/src/WixToolset.Core/Preprocessor.cs b/src/WixToolset.Core/Preprocessor.cs
index 23f568a8..3aed0735 100644
--- a/src/WixToolset.Core/Preprocessor.cs
+++ b/src/WixToolset.Core/Preprocessor.cs
@@ -13,7 +13,7 @@ namespace WixToolset.Core
     using System.Xml.Linq;
     using WixToolset.Data;
     using WixToolset.Extensibility;
-    using WixToolset.Preprocess;
+    using WixToolset.Core.Preprocess;
 
     /// <summary>
     /// Preprocessor object