diff --git a/linx64/include/boost/multiprecision/detail/number_base.hpp b/linx64/include/boost/multiprecision/detail/number_base.hpp
index cb295157..b405ba41 100644
--- a/linx64/include/boost/multiprecision/detail/number_base.hpp
+++ b/linx64/include/boost/multiprecision/detail/number_base.hpp
@@ -156,11 +156,7 @@ BOOST_CONSTEXPR typename enable_if_c<(is_unsigned<T>::value), T>::type unsigned_
 //
 // Move support:
 //
-#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
-#  define BOOST_MP_MOVE(x) std::move(x)
-#else
 #  define BOOST_MP_MOVE(x) x
-#endif
 
 template <class T>
 struct bits_of