diff --git a/manpages/shorewall-masq.xml b/manpages/shorewall-masq.xml
index 776925e8c..e185a4a81 100644
--- a/manpages/shorewall-masq.xml
+++ b/manpages/shorewall-masq.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
+"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
 <refentry>
   <refmeta>
     <refentrytitle>shorewall-masq</refentrytitle>
@@ -33,7 +35,7 @@
       <para>If you have more than one ISP, adding entries to this file will
       *not* force connections to go out through a particular ISP. You must use
       PREROUTING entries in <ulink
-      url="shorewall-tcrules.tcml">shorewall-tcrules</ulink>(5) to do
+      url="shorewall-tcrules.html">shorewall-tcrules</ulink>(5) to do
       that.</para>
     </warning>
 
@@ -497,4 +499,4 @@
     shorewall-tcrules(5), shorewall-tos(5), shorewall-tunnels(5),
     shorewall-zones(5)</para>
   </refsect1>
-</refentry>
\ No newline at end of file
+</refentry>