1 files changed, 1 insertions, 0 deletions

diff --git a/src/WixToolset.Core.WindowsInstaller/WindowsInstallerBackendFactory.cs b/src/WixToolset.Core.WindowsInstaller/WindowsInstallerBackendFactory.cs
index b66a4617..a7f58ed4 100644
--- a/src/WixToolset.Core.WindowsInstaller/WindowsInstallerBackendFactory.cs
+++ b/src/WixToolset.Core.WindowsInstaller/WindowsInstallerBackendFactory.cs
@@ -5,6 +5,7 @@ namespace WixToolset.Core.WindowsInstaller
     using System;
     using System.IO;
     using WixToolset.Extensibility;
+    using WixToolset.Extensibility.Services;
 
     internal class WindowsInstallerBackendFactory : IBackendFactory
     {