diff --git a/extension-objects/README.md b/extension-objects/README.md
index e345952ed..9b5c93a22 100644
--- a/extension-objects/README.md
+++ b/extension-objects/README.md
@@ -13,7 +13,7 @@ tags:
 Anticipate that an object’s interface needs to be extended in the future. Additional
 interfaces are defined by extension objects.
 
-![alt text](./etc/extension_obj1.png "Extension objects")
+![Extension_objects](./etc/extension_obj.png "Extension objects")
 
 ## Applicability
 Use the Extension Objects pattern when: