diff --git a/BLFS/xsl/lfs_make_book.xsl b/BLFS/xsl/lfs_make_book.xsl
index b09be0e..3884c9d 100644
--- a/BLFS/xsl/lfs_make_book.xsl
+++ b/BLFS/xsl/lfs_make_book.xsl
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 
-<!-- $Id: -->
+<!-- $Id$ -->
 
 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                 version="1.0">