1 files changed, 1 insertions, 1 deletions

diff --git a/src/WixToolset.Core.WindowsInstaller/Differ.cs b/src/WixToolset.Core.WindowsInstaller/Differ.cs
index 0e1a7315..304d0152 100644
--- a/src/WixToolset.Core.WindowsInstaller/Differ.cs
+++ b/src/WixToolset.Core.WindowsInstaller/Differ.cs
@@ -10,7 +10,7 @@ namespace WixToolset.Core.WindowsInstaller
     using System.Globalization;
     using WixToolset.Core.WindowsInstaller.Msi;
     using WixToolset.Data;
-    using WixToolset.Data.Tuples;
+    using WixToolset.Data.Symbols;
     using WixToolset.Data.WindowsInstaller;
     using WixToolset.Data.WindowsInstaller.Rows;
     using WixToolset.Extensibility;