diff --git a/TODO.md b/TODO.md
index 1e30ca5..3829076 100644
--- a/TODO.md
+++ b/TODO.md
@@ -11,7 +11,7 @@
 ### Optional
 
 - [ ] Notifications via XMPP
-- [ ] Buy products in stock without an account (as a guest)
+- [x] Buy products in stock without an account (as a guest)
 
 ## User management and authentification