diff --git a/src/agenda_culturel/models.py b/src/agenda_culturel/models.py
index 55ccd51..25f4156 100644
--- a/src/agenda_culturel/models.py
+++ b/src/agenda_culturel/models.py
@@ -312,7 +312,7 @@ class Event(models.Model):
 
         self.recurrence_dtstart = datetime.combine(sday, stime)
 
-        if self.recurrences is None:
+        if self.recurrences is None or len(self.recurrences.rrules) == 0:
             if self.end_day is None:
                 self.dtend = None
             else: