diff --git a/src/tuple.cpp b/src/tuple.cpp
index 2762ab27..a6820b70 100644
--- a/src/tuple.cpp
+++ b/src/tuple.cpp
@@ -1,3 +1,7 @@
+// Copyright David Abrahams 2004.
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
 #include <boost/python/tuple.hpp>
 
 namespace boost { namespace python { namespace detail {