diff --git a/doc/move.qbk b/doc/move.qbk
index 2c9a807..729e92a 100644
--- a/doc/move.qbk
+++ b/doc/move.qbk
@@ -767,6 +767,8 @@ Many thanks to all boosters that have tested, reviewed and improved the library.
 *  Added [macroref BOOST_MOVE_BASE BOOST_MOVE_BASE] utility.
 *  Added [funcref boost::adl_move_swap adl_move_swap] utility.
 *  Reduced dependencies on other Boost libraries to make the library a bit more lightweight.
+*  Fixed bugs:
+   *  [@https://svn.boost.org/trac/boost/ticket/11044 Trac #11044: ['"boost::rv inherits off union, when such passed as template argument"]].
 
 [endsect]
 
diff --git a/include/boost/move/detail/type_traits.hpp b/include/boost/move/detail/type_traits.hpp
index ad29e7f..ac0bbcd 100644
--- a/include/boost/move/detail/type_traits.hpp
+++ b/include/boost/move/detail/type_traits.hpp
@@ -847,7 +847,7 @@ struct alignment_of_impl
     // Using a combination of the two seems to make the most of a bad job:
    : alignment_logic< sizeof(alignment_of_hack<T>) - 2*sizeof(T), __alignof(T)>
 {};
-#elif !defined(BOOST_ALIGNMENT_OF)
+#elif !defined(BOOST_MOVE_ALIGNMENT_OF)
    : alignment_logic< sizeof(alignment_of_hack<T>) - 2*sizeof(T), sizeof(T)>
 {};
 #else