diff --git a/include/boost/tuple/detail/tuple_basic.hpp b/include/boost/tuple/detail/tuple_basic.hpp
index f404919..acc25b9 100644
--- a/include/boost/tuple/detail/tuple_basic.hpp
+++ b/include/boost/tuple/detail/tuple_basic.hpp
@@ -19,7 +19,7 @@
 // ( and other bugs ) per suggestion of Jens Maurer
 // simplified element type accessors + bug fix  (Jeremy Siek)
 // Several changes/additions according to suggestions by Doug Gregor, 
-// William Kempf, Vesa Karvonen, John Max Skaller, Ed Brey, Beman Davis,
+// William Kempf, Vesa Karvonen, John Max Skaller, Ed Brey, Beman Dawes,
 // David Abrahams.
 
 // Revision history:
@@ -361,7 +361,7 @@ struct cons<HT, null_type> {
        const null_type&, const null_type&, const null_type&)
   : head (t1) {}
 
-  cons(const null_type& t1, 
+  cons(const null_type&, 
        const null_type&, const null_type&, const null_type&, 
        const null_type&, const null_type&, const null_type&, 
        const null_type&, const null_type&, const null_type&)