diff --git a/docs/features/schema/integration-guidelines.md b/docs/features/schema/integration-guidelines.md
index 429fd719..999c9c85 100644
--- a/docs/features/schema/integration-guidelines.md
+++ b/docs/features/schema/integration-guidelines.md
@@ -72,10 +72,10 @@ class Book  {
 	public function generate() {
 
 		$canonical = YoastSEO()->meta->for_current_page()->canonical;
-		$post_id = YoastSEO()->meta->for_current_page()->post_id;
+		$post_id = YoastSEO()->meta->for_current_page()->id;
 
 		// Set the type.
-		$data['type'] = 'Book';
+		$data['@type'] = 'Book';
 
 		// Give it a unique ID, based on the URL and the Post ID.
 		$data['@id'] = $canonical . '#/book/' . $post_id;
@@ -183,4 +183,4 @@ In the example above, we used `isPartOf`. This is fine if your Schema "piece" is
 
 ```json
   "mainEntityOfPage": { "@id": "<page url>" }
-```
\ No newline at end of file
+```