diff --git a/docs/abn-tree.yml b/docs/abn-tree.yml
index fbd317dedf..8bcd426c67 100644
--- a/docs/abn-tree.yml
+++ b/docs/abn-tree.yml
@@ -1,17 +1,18 @@
 - tutorials:
     title: Tutorials
-    - creating-your-first-adf-application.md: 'Creating your first ADF application'
-    - creating-the-app-using-yeoman.md: 'Creating your ADF application using Yeoman'
-    - creating-javascript-app-using-alfresco-js-api.md: 'Creating your JavaScript application using alfresco-js-api'
-    - new-component.md: 'Adding a new component'
-    - new-view.md: 'Adding a new view'
-    - using-components.md: 'Using components'
-    - basic-theming.md: 'Basic theming'
-    - customising-login.md: 'Customising the Login component'
-    - working-with-data-table.md: 'Working with a DataTable'
-    - working-with-nodes-api-service.md: 'Working with the Nodes API Service'
-    - working-with-nodes-js-api.md: 'Working with nodes using the JS-API'
-    - content-metadata-component.md: 'Content metadata component'
+    children:
+        - creating-your-first-adf-application.md: 'Creating your first ADF application'
+        - creating-the-app-using-yeoman.md: 'Creating your ADF application using Yeoman'
+        - creating-javascript-app-using-alfresco-js-api.md: 'Creating your JavaScript application using alfresco-js-api'
+        - new-component.md: 'Adding a new component'
+        - new-view.md: 'Adding a new view'
+        - using-components.md: 'Using components'
+        - basic-theming.md: 'Basic theming'
+        - customising-login.md: 'Customising the Login component'
+        - working-with-data-table.md: 'Working with a DataTable'
+        - working-with-nodes-api-service.md: 'Working with the Nodes API Service'
+        - working-with-nodes-js-api.md: 'Working with nodes using the JS-API'
+        - content-metadata-component.md: 'Content metadata component'
 - user-guide: 'User guide'
 - core: 'Core API'
 - content-services: 'Content Services API'