diff --git a/src/agenda_culturel/calendar.py b/src/agenda_culturel/calendar.py
index bb9cf47..8248c79 100644
--- a/src/agenda_culturel/calendar.py
+++ b/src/agenda_culturel/calendar.py
@@ -285,7 +285,7 @@ class CalendarList:
         for e in self.events:
             if e.recurrences is None:
                 if e.end_day is None:
-                    if e.start_day >= self.firstdate and e.start_day < self.lastdate:
+                    if e.start_day >= self.firstdate and e.start_day <= self.lastdate:
                         self.calendar_days[e.start_day.__str__()].add_event(e)
                 else:
                     for d in daterange(max(e.start_day, self.firstdate), min(e.end_day, self.lastdate)):