diff --git a/include/boost/type_traits/intrinsics.hpp b/include/boost/type_traits/intrinsics.hpp
index 41cd16b..ddcd50f 100644
--- a/include/boost/type_traits/intrinsics.hpp
+++ b/include/boost/type_traits/intrinsics.hpp
@@ -222,12 +222,14 @@
 #   if __has_feature(is_polymorphic)
 #     define BOOST_IS_POLYMORPHIC(T) __is_polymorphic(T)
 #   endif
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
 #   if __has_extension(is_trivially_constructible)
 #     define BOOST_HAS_TRIVIAL_MOVE_CONSTRUCTOR(T) (__is_trivially_constructible(T, T&&) && is_constructible<T, T&&>::value && !::boost::is_volatile<T>::value)
 #   endif
 #   if __has_extension(is_trivially_assignable)
 #     define BOOST_HAS_TRIVIAL_MOVE_ASSIGN(T) (__is_trivially_assignable(T&, T&&) && is_assignable<T&, T&&>::value && !::boost::is_volatile<T>::value)
 #   endif
+#endif
 #   if (!defined(unix) && !defined(__unix__)) || defined(__LP64__) || !defined(__GNUC__)
 // GCC sometimes lies about alignment requirements
 // of type double on 32-bit unix platforms, use the