diff --git a/build/bakefiles/regex.bkl b/build/bakefiles/regex.bkl
index cdd83bcc9e..7920406199 100644
--- a/build/bakefiles/regex.bkl
+++ b/build/bakefiles/regex.bkl
@@ -1,4 +1,5 @@
 <?xml version="1.0" ?>
+<!-- $Id$ -->
 <makefile>
     
     <set var="UNICODE_DEFINE">