diff --git a/common/urls.xsl b/common/urls.xsl
index e713090..4a60bd8 100644
--- a/common/urls.xsl
+++ b/common/urls.xsl
@@ -1,5 +1,7 @@
 <?xml version='1.0' encoding='ISO-8859-1'?>
 
+<!-- $Id$ -->
+
 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
     version="1.0">