diff --git a/src/agenda_culturel/models.py b/src/agenda_culturel/models.py
index c6fe41b..5af3ee3 100644
--- a/src/agenda_culturel/models.py
+++ b/src/agenda_culturel/models.py
@@ -217,7 +217,7 @@ class DuplicatedEvents(models.Model):
     def fix(self, event=None):
         events = self.event_set.all()
         if event is None:
-            events = events.sort_by("-created_date")
+            events = events.order_by("-created_date")
         for e in events:
             if event is None:
                 event = e