diff --git a/appendices/ini.xml b/appendices/ini.xml
index 57ce1229d4..df37eab906 100644
--- a/appendices/ini.xml
+++ b/appendices/ini.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.78 $ -->
+<!-- $Revision: 1.79 $ -->
 
 <appendix xml:id="ini" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <title>&php.ini; directives</title>
@@ -2187,7 +2187,7 @@
        <entry><link linkend="ini.open-basedir">open_basedir</link></entry>
        <entry>NULL</entry>
        <entry>PHP_INI_ALL</entry>
-       <entry>PHP_INI_SYSTEM in PHP &lt; 6.</entry>
+       <entry>PHP_INI_SYSTEM in PHP &lt; 5.2.3.</entry>
       </row>
       <row>
        <entry>oracle.allow_persistent</entry>
diff --git a/features/safe-mode.xml b/features/safe-mode.xml
index 13937cab76..3f6ddbdfd3 100644
--- a/features/safe-mode.xml
+++ b/features/safe-mode.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.79 $ -->
+<!-- $Revision: 1.80 $ -->
  <chapter xml:id="features.safe-mode" xmlns="http://docbook.org/ns/docbook">
   <title>Safe Mode</title>
 
@@ -71,7 +71,7 @@
        <entry>open_basedir</entry>
        <entry>NULL</entry>
        <entry>PHP_INI_ALL</entry>
-       <entry>PHP_INI_SYSTEM in PHP &lt; 6.</entry>
+       <entry>PHP_INI_SYSTEM in PHP &lt; 5.3.0</entry>
       </row>
       <row>
        <entry>disable_functions</entry>
@@ -259,6 +259,15 @@
        <para>
         The default is to allow all files to be opened.
        </para>
+       <note>
+        <para>
+         As of PHP 5.3.0 open_basedir can be tightened at run-time. This means
+         that if open_basedir is set to <literal>/www/</literal> in &php.ini;
+         a script can tighten the configuration to
+         <literal>/www/tmp/</literal> at run-time with
+         <function>ini_set</function>
+        </para>
+       </note>
       </listitem>
      </varlistentry>
      <varlistentry xml:id="ini.disable-functions">