1 files changed, 1 insertions, 1 deletions

diff --git a/src/samples/Dtf/DDiff/IDiffEngine.cs b/src/tools/Dtf/DDiff/IDiffEngine.cs
index 9895d6ff..918e42e6 100644
--- a/src/samples/Dtf/DDiff/IDiffEngine.cs
+++ b/src/tools/Dtf/DDiff/IDiffEngine.cs
@@ -4,7 +4,7 @@ using System;
 using System.IO;
 using System.Collections;
 
-namespace WixToolset.Dtf.Samples.DDiff
+namespace WixToolset.Dtf.Tools.DDiff
 {
         public interface IDiffEngine
         {