diff --git a/mycaldav/models.py b/mycaldav/models.py
index 8885103..31b1cf8 100644
--- a/mycaldav/models.py
+++ b/mycaldav/models.py
@@ -25,10 +25,7 @@ Key_separator = "--"
 
 
 class caldav_sync_manager(models.Model):    
-    dtDate = models.DateField('Date_synchronized', auto_now_add=True, unique=True)
-    bDone = models.BooleanField("Effectuée", default=False)
-    dtUpdated = models.DateTimeField('date updated', auto_now=True)
-    dtCreated = models.DateTimeField('date published', auto_now_add=True)
+    dtDate = models.DateField('Date_synchronized', auto_now_add=True, unique=True)    
 
     def __str__(self):
        return f"{self.dtDate} => {self.bDone}" 
@@ -40,8 +37,7 @@ class caldav_sync_manager(models.Model):
         self.a_task = data.calendar(cal_id=caldav_id["task"])
 
     def set_today_as_synced(self):
-        o_new_manager = caldav_sync_manager()
-        o_new_manager.bDone=True
+        o_new_manager = caldav_sync_manager()        
         o_new_manager.save()
 
     def init_task_management(self):