diff --git a/unisportomat/quiz/models.py b/unisportomat/quiz/models.py
index 3605542fb7778f11508b0252a2c5e4c9642d8273..0bba72dcc8107d8835aaa78673f5fbe9ab8922aa 100644
--- a/unisportomat/quiz/models.py
+++ b/unisportomat/quiz/models.py
@@ -59,6 +59,7 @@ 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()