diff --git a/include/boost/intrusive/detail/ebo_functor_holder.hpp b/include/boost/intrusive/detail/ebo_functor_holder.hpp
index 31b2f81..27415c1 100644
--- a/include/boost/intrusive/detail/ebo_functor_holder.hpp
+++ b/include/boost/intrusive/detail/ebo_functor_holder.hpp
@@ -35,7 +35,7 @@ namespace detail {
 #define BOOST_INTRUSIVE_TT_DECL
 #endif
 
-#if defined(_MSC_EXTENSIONS) && !defined(__BORLAND__) && !defined(_WIN64) && !defined(_M_ARM) && !defined(UNDER_CE)
+#if defined(_MSC_EXTENSIONS) && !defined(__BORLAND__) && !defined(_WIN64) && !defined(_M_ARM) && !defined(_M_ARM64) && !defined(UNDER_CE)
 #define BOOST_INTRUSIVE_TT_TEST_MSC_FUNC_SIGS
 #endif