diff --git a/LDP/rp_filter.xml b/LDP/rp_filter.xml
index 2341e89c..80c981cc 100644
--- a/LDP/rp_filter.xml
+++ b/LDP/rp_filter.xml
@@ -1,11 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
-"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
-<article lang="en-US">
-  <articleinfo>
-    <title>rp_filter</title>
-  </articleinfo>
-
   <para><emphasis role="bold">What is it? What does it do?</emphasis></para>
 
   <para>rp_filter stands for “reverse path filter” meaning the “reverse path”
@@ -503,5 +495,5 @@
       </itemizedlist>
     </listitem>
   </itemizedlist>
-</article>
+