diff --git a/appendices/configure/misc.xml b/appendices/configure/misc.xml
index 9c281f1d2e..a73e1ecbc7 100644
--- a/appendices/configure/misc.xml
+++ b/appendices/configure/misc.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.3 $ -->
+<!-- $Revision: 1.4 $ -->
  <sect3 xml:id="configure.options.misc" xmlns="http://docbook.org/ns/docbook">
   <title>Misc options</title>
   <variablelist>
@@ -187,6 +187,7 @@ code!
     <listitem>
      <para>
       Compile with memory limit support.
+      (not available since PHP 5.2.1 - always enabled)
      </para>
     </listitem>
    </varlistentry>