diff --git a/content/u/advent-calendar/17/contents.lr b/content/u/advent-calendar/17/contents.lr
index 7df087e..b3efc09 100644
--- a/content/u/advent-calendar/17/contents.lr
+++ b/content/u/advent-calendar/17/contents.lr
@@ -1,3 +1,5 @@
+_model: product
+---
 _discoverable: no
 ---
 _hidden: no