diff --git a/doc/GNUmakefile b/doc/GNUmakefile
index a162267..85917f7 100755
--- a/doc/GNUmakefile
+++ b/doc/GNUmakefile
@@ -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)
+
 ECHO	= /bin/echo
 
 all: