diff --git a/test/fbi-test_b.cpp b/test/fbi-test_b.cpp
index a32525c..fa3c38c 100644
--- a/test/fbi-test_b.cpp
+++ b/test/fbi-test_b.cpp
@@ -34,9 +34,11 @@
 //#include <tuple>
 #include "unittest.hxx"
 // hack for testing purposes
+#define __LIBFBI_USE_SET_FOR_RESULT__
 #define private public
 #include <fbi/fbi.h>
 #undef private
+#undef __LIBFBI_USE_SET_FOR_RESULT__
 #include <fbi/traits.h>
 //#include <fbi/tuplegenerator.h>
 #include <fbi/connectedcomponents.h>