Index: boost/fusion/adapted/std_pair.hpp
===================================================================
--- boost/fusion/adapted/std_pair.hpp	(revision 69271)
+++ boost/fusion/adapted/std_pair.hpp	(working copy)
@@ -12,11 +12,7 @@
 
 #include <boost/fusion/adapted/struct/adapt_struct.hpp>
 
-namespace std
-{
-    template<class T1, class T2>
-    struct pair;
-}
+#include <utility>
 
 BOOST_FUSION_ADAPT_TPL_STRUCT(
     (T1)(T2),(std::pair)(T1)(T2),(T1, first)(T2, second))