diff --git a/architecture design proposal.md b/architecture design proposal.md
index 393927e..1eb2aef 100755
--- a/architecture design proposal.md	
+++ b/architecture design proposal.md	
@@ -27,7 +27,7 @@ The following terms are used:
 ## Content related
 
 - **post type:** Post type and custom post types within WordPress
-- **Object Type:** ActivityPub [object type](https://www.w3.org/TR/activitystreams-vocabulary/#object types)
+- **Object Type:** ActivityPub [object type](https://www.w3.org/TR/activitystreams-vocabulary/#object-types)
 - **Transformers:** a piece of code that converts items of a particular WordPress post type to an ActivityPub object of (a) specified type(s). For example a transformer that can transform:
     - `post` to a `Note`
     - `post` to a `Article`