diff --git a/include/boost/pending/integer_log2.hpp b/include/boost/pending/integer_log2.hpp
index fd8e446..f85847b 100644
--- a/include/boost/pending/integer_log2.hpp
+++ b/include/boost/pending/integer_log2.hpp
@@ -12,7 +12,8 @@
 //          http://www.boost.org/LICENSE_1_0.txt)
 //
 // ------------------------------------------------------
-
+//
+// $Id$
 
 
 #ifndef BOOST_INTEGER_LOG2_HPP_GP_20030301