diff --git a/include/boost/phoenix/statement/do_while.hpp b/include/boost/phoenix/statement/do_while.hpp
index ff0a297..9c155c6 100644
--- a/include/boost/phoenix/statement/do_while.hpp
+++ b/include/boost/phoenix/statement/do_while.hpp
@@ -27,10 +27,10 @@ namespace boost { namespace phoenix
 
         template <typename Cond, typename Do, typename Context>
         result_type
-        operator()(Cond const& cond, Do const& do_, Context const & ctx) const
+        operator()(Cond const& cond, Do const& do_it, Context const & ctx) const
         {
             do
-                boost::phoenix::eval(do_, ctx);
+                boost::phoenix::eval(do_it, ctx);
             while (boost::phoenix::eval(cond, ctx));
         }
     };
diff --git a/include/boost/phoenix/statement/while.hpp b/include/boost/phoenix/statement/while.hpp
index d9294e0..273b2e4 100644
--- a/include/boost/phoenix/statement/while.hpp
+++ b/include/boost/phoenix/statement/while.hpp
@@ -27,11 +27,11 @@ namespace boost { namespace phoenix
 
         template <typename Cond, typename Do, typename Context>
         result_type
-        operator()(Cond const& cond, Do const& do_, Context const & ctx) const
+        operator()(Cond const& cond, Do const& do_it, Context const & ctx) const
         {
             while(boost::phoenix::eval(cond, ctx))
             {
-                boost::phoenix::eval(do_, ctx);
+                boost::phoenix::eval(do_it, ctx);
             }
         }
     };