1 files changed, 1 insertions, 1 deletions

diff --git a/src/libs/dutil/test/DUtilUnitTest/GuidUtilTest.cpp b/src/libs/dutil/test/DUtilUnitTest/GuidUtilTest.cpp
index a6e27a09..a184df68 100644
--- a/src/libs/dutil/test/DUtilUnitTest/GuidUtilTest.cpp
+++ b/src/libs/dutil/test/DUtilUnitTest/GuidUtilTest.cpp
@@ -4,7 +4,7 @@
 
 using namespace System;
 using namespace Xunit;
-using namespace WixBuildTools::TestSupport;
+using namespace WixInternal::TestSupport;
 
 namespace DutilTests
 {