diff --git a/include/boost/unordered/detail/fca.hpp b/include/boost/unordered/detail/fca.hpp index 11902eba..df3e4688 100644 --- a/include/boost/unordered/detail/fca.hpp +++ b/include/boost/unordered/detail/fca.hpp @@ -151,7 +151,7 @@ namespace boost { #endif #if !defined(BOOST_NO_INT64_T) && \ - (defined(BOOST_HAS_INT128) || (defined(BOOST_MSVC) && defined(_WIN64))) + (defined(BOOST_HAS_INT128) || (defined(_MSC_VER) && defined(_M_X64))) #define BOOST_UNORDERED_FCA_FASTMOD_SUPPORT #endif