diff --git a/mycaldav/models.py b/mycaldav/models.py
index 6142acb..5786d10 100644
--- a/mycaldav/models.py
+++ b/mycaldav/models.py
@@ -60,7 +60,9 @@ class caldav_sync_manager(models.Model):
             self.copy_caldav_data(last_month)
             o_new_manager = caldav_sync_manager() 
             o_new_manager.dtDate = last_month
-            o_new_manager.save() 
+            o_new_manager.save()
+            o_new_manager.dtDate = last_month 
+            o_new_manager.save()
             print(f"synced events")        
         else:
             print("Mois précédant: pas de copy, sync déjà fait")