diff --git a/appendices/ini.xml b/appendices/ini.xml
index 10eefc3131..e53ea50631 100644
--- a/appendices/ini.xml
+++ b/appendices/ini.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.3 $ -->
+<!-- $Revision: 1.4 $ -->
 
  <appendix id="ini">
   <title>List of core &php.ini; directives</title>
@@ -82,6 +82,11 @@
       <entry>On</entry>
       <entry>PHP_INI_SYSTEM</entry>
      </row>
+     <row>
+      <entry>zend.ze1_compatibility_mode</entry>
+      <entry>Off</entry>
+      <entry>PHP_INI_ALL</entry>
+     </row>
     </tbody>
     </tgroup>
    </table>
@@ -200,6 +205,19 @@
         </para>
        </listitem>
       </varlistentry>
+
+      <varlistentry id="ini.zend.ze1-compatibility-mode">
+       <term>
+        <parameter>zend.ze1_compatibility_mode</parameter>
+        <type>boolean</type>
+       </term>
+       <listitem>
+        <para>
+         Enable compatibility mode with Zend Engine 1 (PHP 4).  It affects
+         the cloning, casting, and comparing of objects.
+        </para>
+       </listitem>
+      </varlistentry>
      </variablelist>
     </para>
    </sect1>