Index: boost/property_tree/detail/ptree_implementation.hpp
===================================================================
--- boost/property_tree/detail/ptree_implementation.hpp	(revision 61636)
+++ boost/property_tree/detail/ptree_implementation.hpp	(working copy)
@@ -502,14 +502,16 @@
     typename basic_ptree<K, D, C>::iterator
         basic_ptree<K, D, C>::to_iterator(assoc_iterator ai)
     {
-        return iterator(subs::ch(this).project<0>(ai.base()));
+        return iterator(subs::ch(this).
+                          BOOST_NESTED_TEMPLATE project<0>(ai.base()));
     }
 
     template<class K, class D, class C> inline
     typename basic_ptree<K, D, C>::const_iterator
         basic_ptree<K, D, C>::to_iterator(const_assoc_iterator ai) const
     {
-        return const_iterator(subs::ch(this).project<0>(ai.base()));
+        return const_iterator(subs::ch(this).
+                                BOOST_NESTED_TEMPLATE project<0>(ai.base()));
     }
 
     // Property tree view