diff --git a/tournaments/models/tournament.py b/tournaments/models/tournament.py
index 843e3f9..bb1c6e3 100644
--- a/tournaments/models/tournament.py
+++ b/tournaments/models/tournament.py
@@ -234,7 +234,7 @@ class Tournament(models.Model):
                         summon = TeamSummon(names, next_match.start_date, weight, stage, next_match.court_name(next_match.court_index), team_registration.logo)
                         summons.append(summon)
 
-        summons.sort(key=lambda s: s.date)
+        summons.sort(key=lambda s: (s.date is None, s.date or datetime.min))
         return summons
 
     def has_summons(self):