diff --git a/models/account_move_line.py b/models/account_move_line.py
index 9ca8983bc2ccf2706b529f0f8ded9da8b6b14009..54245eea812b1bb6fbe229cd23c2d73526d06d9a 100644
--- a/models/account_move_line.py
+++ b/models/account_move_line.py
@@ -7,4 +7,4 @@ from odoo import fields, models, api
 class AccountMoveLine(models.Model):
     _inherit = 'account.move.line'
 
-    date_export = fields.Datetime('Date export')
+    date_export = fields.Datetime('Date export', copy=False)