diff --git a/Code/Mantid/Vates/VatesAPI/test/vtkMDQuadFactoryTest.h b/Code/Mantid/Vates/VatesAPI/test/vtkMDQuadFactoryTest.h
index 577399644b889070d5d157f6c373745de05cfcdf..4e06499b706c65a89daeb83bc5c0e863b4cf8c74 100644
--- a/Code/Mantid/Vates/VatesAPI/test/vtkMDQuadFactoryTest.h
+++ b/Code/Mantid/Vates/VatesAPI/test/vtkMDQuadFactoryTest.h
@@ -15,6 +15,7 @@
 using namespace Mantid::VATES;
 using namespace Mantid::API;
 using namespace Mantid::MDEvents;
+using namespace Mantid::MDAlgorithms;
 using namespace testing;
 
 //=====================================================================================