diff --git a/test/test_seller.cpp b/test/test_seller.cpp
index 34c0b6c..b660126 100644
--- a/test/test_seller.cpp
+++ b/test/test_seller.cpp
@@ -2,7 +2,9 @@
 
 #define BOOST_TEST_MODULE seller
 
-#include <boost/test/unit_test.hpp>
+#include <boost/test/included/unit_test.hpp>
+
+using namespace boost::unit_test;
 
 BOOST_AUTO_TEST_CASE( initial_test ) {
     Seller seller{};