diff --git a/tabellio/agenda/event.py b/tabellio/agenda/event.py
index 0ac66ee..ce73b85 100644
--- a/tabellio/agenda/event.py
+++ b/tabellio/agenda/event.py
@@ -39,7 +39,10 @@ class BaseEvent(Item):
     def longdatetime(self):
         # unfortunately this forces the locale
         formatter = locales.getLocale('fr').dates.getFormatter('dateTime', 'medium')
-        formatter.setPattern(u'EEEE d MMMM yyyy à HH:mm')
+        if self.start.hour == 0 and self.start.minute == 0:
+            formatter.setPattern(u'EEEE d MMMM yyyy')
+        else:
+            formatter.setPattern(u'EEEE d MMMM yyyy à HH:mm')
         return formatter.format(self.start)
     longdatetime = property(longdatetime)