diff --git a/Shorewall-docs/6to4.xml b/Shorewall-docs/6to4.xml
index c6a8e601c..d6d2794b7 100644
--- a/Shorewall-docs/6to4.xml
+++ b/Shorewall-docs/6to4.xml
@@ -2,6 +2,8 @@
 <!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
 <article>
+  <!--$Id$-->
+
   <articleinfo>
     <title>6to4 Tunnels</title>
 
diff --git a/Shorewall-docs/CorpNetwork.xml b/Shorewall-docs/CorpNetwork.xml
index e2cf69d13..c47a3d145 100644
--- a/Shorewall-docs/CorpNetwork.xml
+++ b/Shorewall-docs/CorpNetwork.xml
@@ -2,6 +2,8 @@
 <!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
 <article>
+  <!--$Id$-->
+
   <articleinfo>
     <title>Corporate Network</title>
 
diff --git a/Shorewall-docs/Documentation.xml b/Shorewall-docs/Documentation.xml
index 7b402f9aa..5bce77108 100644
--- a/Shorewall-docs/Documentation.xml
+++ b/Shorewall-docs/Documentation.xml
@@ -2,6 +2,8 @@
 <!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
 <article id="Documentation">
+  <!--$Id$-->
+
   <articleinfo>
     <title>Shorewall 1.4 Reference</title>
 
diff --git a/Shorewall-docs/template.xml b/Shorewall-docs/template.xml
index fd674a8e5..4105741e2 100644
--- a/Shorewall-docs/template.xml
+++ b/Shorewall-docs/template.xml
@@ -2,6 +2,8 @@
 <!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
 <article>
+  <!--$Id$-->
+
   <articleinfo>
     <title></title>