diff --git a/mycaldav/models.py b/mycaldav/models.py
index b68465d..a4c153e 100644
--- a/mycaldav/models.py
+++ b/mycaldav/models.py
@@ -25,7 +25,8 @@ Key_separator = "--"
 
 
 class caldav_sync_manager(models.Model):    
-    dtDate = models.DateField('Date_synchronized', auto_now_add=True, unique=True)    
+    dtDate = models.DateField('Date_synchronized', auto_now_add=True, unique=True)
+    bDone = models.BooleanField("Effectuée", default=False)    
 
     def __str__(self):
        return f"{self.dtDate}"