diff --git a/doc/predef.qbk b/doc/predef.qbk
index 0ee645f..7fa914c 100644
--- a/doc/predef.qbk
+++ b/doc/predef.qbk
@@ -3,6 +3,8 @@
     [version 1.3]
     [authors [Rivera, Rene]]
     [copyright 2005, 2008-2015 Rene Rivera]
+    [copyright 2015 Charly Chevalier]
+    [copyright 2015 Joel Falcou]
     [purpose Identification and specification of predefined macros.]
     [license
         Distributed under the Boost Software License, Version 1.0.