Index: swap.hpp
===================================================================
--- swap.hpp	(revision 86799)
+++ swap.hpp	(working copy)
@@ -21,8 +21,9 @@
 // avoid ambiguity when swapping objects of a Boost type that does
 // not have its own boost::swap overload.
 
-#include <algorithm> //for std::swap
+
 #include <cstddef> //for std::size_t
+#include <utility> // std::swap is included in <utility> in C++11
 
 namespace boost_swap_impl
 {