diff --git a/unisportomat/quiz/models.py b/unisportomat/quiz/models.py
index 5ddc3750341cecfd9d426338e35f06f17d9f2159..306dc7cedaa60dd9b555ab31938277eff0710cc9 100644
--- a/unisportomat/quiz/models.py
+++ b/unisportomat/quiz/models.py
@@ -58,6 +58,7 @@ class Sport(models.Model):
     Defines a Sport with name, url that leads to the booking page.
     A sport includes ratings for all criterions.
     (e.g. How much it corresponds to the criterion "Martial Arts")
+    TODO: last_used may be changed in the future to better work with other functionalities, eg Statistics.
     """
 
     name = models.TextField()