diff --git a/doc/v2/opaque.html b/doc/v2/opaque.html
index 5f55d5c8..9ffcccdd 100644
--- a/doc/v2/opaque.html
+++ b/doc/v2/opaque.html
@@ -1,5 +1,9 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 
+<!-- Copyright Gottfried Ganßauge 2006. 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) -->
+
 <html>
   <head>
     <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
