diff --git a/docs/en/02_Developer_Guides/00_Model/05_Extending_DataObjects.md b/docs/en/02_Developer_Guides/00_Model/05_Extending_DataObjects.md
index cb30afb4f..11f6a45b2 100644
--- a/docs/en/02_Developer_Guides/00_Model/05_Extending_DataObjects.md
+++ b/docs/en/02_Developer_Guides/00_Model/05_Extending_DataObjects.md
@@ -3,7 +3,7 @@ summary: Modify the data model without using subclasses.
 
 # Extending DataObjects
 
-You can add properties and methods to existing [api:DataObjects]s like [api:Member] without hacking core code or sub 
+You can add properties and methods to existing [api:DataObject]s like [api:Member] without hacking core code or sub 
 classing by using [api:DataExtension]. See the [Extending SilverStripe](../extending) guide for more information on
 [api:DataExtension].