diff --git a/appendices/filters.xml b/appendices/filters.xml
index 493bd9be89..820a6c6f0f 100644
--- a/appendices/filters.xml
+++ b/appendices/filters.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.9 $ -->
+<!-- $Revision: 1.10 $ -->
 <appendix id="filters">
  <title>List of Available Filters</title>
  <para>
@@ -379,14 +379,13 @@ The compressed file is 56 bytes long.
    to perform decompression in a minimal memory footprint at the cost of speed.
   </simpara>
 
-  <note>
-   <simpara>
-    The bzip2.* filters are not currently built into the PHP core.  To enable these filters
-    in <literal>PHP 5</literal>, install the <ulink url="&url.pecl.package;bz2_filter">bz2_filter</ulink>
+  <simpara>
+    bzip2.* compression filters are available with PHP as of version <literal>5.1.0</literal> if
+    <xref linkend="ref.bzip2"/> support is enabled.  They are also available as a backport in version
+    <literal>5.0.x</literal> by installing the <ulink url="&url.pecl.package;bz2_filter">bz2_filter</ulink>
     package from <ulink url="&url.pecl;">PECL</ulink>.  These filters are <emphasis>not</emphasis>
     available for <literal>PHP 4</literal>.
-   </simpara>
-  </note>
+  </simpara>
 
   <example>
    <title>