diff --git a/types/ember-data/test/model.ts b/types/ember-data/test/model.ts
index 1e96d105ed..70dba1bd7c 100644
--- a/types/ember-data/test/model.ts
+++ b/types/ember-data/test/model.ts
@@ -29,4 +29,5 @@ assertType<boolean>(user.get('verified'));
 assertType<Date>(user.get('createdAt'));
 
 user.serialize();
-user.serialize({ someOption: 'neat' });
+user.serialize({ includeId: true });
+