diff --git a/include/boost/lambda/detail/lambda_functors.hpp b/include/boost/lambda/detail/lambda_functors.hpp
index c9c9157..a3bfaf1 100644
--- a/include/boost/lambda/detail/lambda_functors.hpp
+++ b/include/boost/lambda/detail/lambda_functors.hpp
@@ -547,9 +547,9 @@ public:
    
 template <int I> class placeholder {};
    
-typedef const lambda_functor<placeholder<FIRST> >  free1_type;
-typedef const lambda_functor<placeholder<SECOND> > free2_type;
-typedef const lambda_functor<placeholder<THIRD> >  free3_type;
+typedef const lambda_functor<placeholder<FIRST> >  placeholder1_type;
+typedef const lambda_functor<placeholder<SECOND> > placeholder2_type;
+typedef const lambda_functor<placeholder<THIRD> >  placeholder3_type;
    
 // free variables are lambda_functors. This is to allow uniform handling with 
 // other lambda_functors.