diff --git a/reference/objaggregation/examples.xml b/reference/objaggregation/examples.xml
index aa61eebe3a..e6147647fc 100644
--- a/reference/objaggregation/examples.xml
+++ b/reference/objaggregation/examples.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
 
 <appendix xml:id="objaggregation.examples">
  &reftitle.examples;
@@ -16,9 +16,9 @@
       <programlisting role="php">
 <![CDATA[
 <?php
-class DateTime {
+class MyDateTime {
   
-  function DateTime() 
+  function MyDateTime() 
   {
       // empty constructor
   }
@@ -35,7 +35,7 @@ class Report {
 
   function Report() 
   {
-      $this->_dt = new DateTime();
+      $this->_dt = new MyDateTime();
       // initialization code ...
   }
 
@@ -62,14 +62,14 @@ $rep = new Report();
       <programlisting role="php">
 <![CDATA[
 <?php
-class DateTime {
+class MyDateTime {
   // same as previous example
 }
 
-class DateTimePlus {
+class MyDateTimePlus {
   var $_format;
   
-  function DateTimePlus($format="Y-m-d H:i:s") 
+  function MyDateTimePlus($format="Y-m-d H:i:s") 
   {
       $this->_format = $format;
   }
@@ -81,7 +81,7 @@ class DateTimePlus {
 }
 
 class Report {
-  var $_dt;    // we'll keep the reference to DateTime here
+  var $_dt;    // we'll keep the reference to MyDateTime here
   // more properties ...
 
   function Report() 
@@ -89,7 +89,7 @@ class Report {
       // do some initialization
   }
 
-  function setDateTime(&$dt) 
+  function setMyDateTime(&$dt) 
   {
       $this->_dt =& $dt;
   }
@@ -104,17 +104,17 @@ class Report {
 }
 
 $rep = new Report();
-$dt = new DateTime();
-$dtp = new DateTimePlus("l, F j, Y (h:i:s a, T)");
+$dt = new MyDateTime();
+$dtp = new MyDateTimePlus("l, F j, Y (h:i:s a, T)");
 
 // generate report with simple date for web display
-$rep->setDateTime(&$dt);
+$rep->setMyDateTime(&$dt);
 echo $rep->generateReport();
 
 // later on in the code ...
 
 // generate report with fancy date
-$rep->setDateTime(&$dtp);
+$rep->setMyDateTime(&$dtp);
 $output = $rep->generateReport();
 // save $output in database
 // ... etc ...