diff --git a/code_submitter/tables.py b/code_submitter/tables.py
index eb1cc05..783f27c 100644
--- a/code_submitter/tables.py
+++ b/code_submitter/tables.py
@@ -59,6 +59,7 @@
     ),
 )
 
+# TODO: constrain such that each team can only have one choice per session?
 ChoiceForSession = sqlalchemy.Table(
     'choice_for_session',
     metadata,