diff --git a/tabellio/pcfdb/sync.py b/tabellio/pcfdb/sync.py
index 77c66c5..9979d7e 100644
--- a/tabellio/pcfdb/sync.py
+++ b/tabellio/pcfdb/sync.py
@@ -1162,14 +1162,12 @@ class SyncFromPcfDbView(BrowserView):
                     object.end = datetime.datetime.strptime(
                                     '%s %s' % (datefin, heurefin),
                                     '%Y-%m-%d %H:%M:%S')
-                else:
-                    object.end = datetime.datetime.strptime(
+                elif datedeb != datefin:
+                        object.end = datetime.datetime.strptime(
                                     '%s' % datefin, '%Y-%m-%d')
-                    if object.end < object.start:
-                        object.end = object.start
 
             if state == 'S_OPEN' and type == 'SE' and datefin and not finreel:
-                if object.end < datetime.datetime.now():
+                if object.end and object.end < datetime.datetime.now():
                     # seances still open, with no real end date, but an end date
                     # that's already in the past, alter the end date.
                     object.end = object.end + datetime.timedelta(seconds=600)