diff --git a/reference/pdo/constants.xml b/reference/pdo/constants.xml
index 4beb7482c0..f88ae1922b 100644
--- a/reference/pdo/constants.xml
+++ b/reference/pdo/constants.xml
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='iso-8859-1'?>
-<!-- $Revision: 1.19 $ -->
+<!-- $Revision: 1.20 $ -->
 <!-- Generated by xml_proto.php v2.1. Found in /scripts directory of phpdoc. -->
 <section xml:id="pdo.constants" xmlns="http://docbook.org/ns/docbook">
  &reftitle.constants;
@@ -286,6 +286,7 @@
    </term>
    <listitem>
     <simpara>
+     As <constant>PDO::FETCH_INTO</constant> but object is provided as a serialized string.
      Available since PHP 5.1.0.
     </simpara>
    </listitem>