diff --git a/include/boost/type_traits/type_traits_test.hpp b/include/boost/type_traits/type_traits_test.hpp
index fa45e38..eae5bb2 100644
--- a/include/boost/type_traits/type_traits_test.hpp
+++ b/include/boost/type_traits/type_traits_test.hpp
@@ -13,6 +13,7 @@
 #include <typeinfo>
 #include <boost/config.hpp>
 #include <boost/utility.hpp>
+#include <boost/type_traits/alignment_traits.hpp>
 //
 // define tests here
 unsigned failures = 0;