diff --git a/account_move_fiscal_month/models/account_move_line.py b/account_move_fiscal_month/models/account_move_line.py
index 6e398aaba..1ba739ed0 100644
--- a/account_move_fiscal_month/models/account_move_line.py
+++ b/account_move_fiscal_month/models/account_move_line.py
@@ -10,4 +10,4 @@ class AccountMoveLine(models.Model):
 
     date_range_fm_id = fields.Many2one(
         related='move_id.date_range_fm_id',
-        store=True, copy=False)
+    )