diff --git a/docs/en/reference/dataextension.md b/docs/en/reference/dataextension.md
index fd9083651..82d1c5d51 100644
--- a/docs/en/reference/dataextension.md
+++ b/docs/en/reference/dataextension.md
@@ -73,7 +73,7 @@ property on the class.
 	:::php
 	<?php
 
-	class CustomMember extends Member {
+	class MyMemberExtension extends DataExtension {
 
 		public function alterFoo($foo) {
 			// outputs the original class
@@ -101,7 +101,7 @@ variables to update:
 	:::php
 	<?php
 
-	class CustomMember extends DataExtension {
+	class MyMemberExtension extends DataExtension {
 
 		private static $db = array(
 			'Position' => 'Varchar',
@@ -121,7 +121,7 @@ CMS fields for an object in an extension:
 	:::php
 	<?php
 
-	class CustomMember extends DataExtension {
+	class MyMemberExtension extends DataExtension {
 
 		private static $db = array(
 			'Position' => 'Varchar',