diff --git a/addons/account/models/account_move.py b/addons/account/models/account_move.py
index e6922e7fd4d..61b5bcb9c6c 100644
--- a/addons/account/models/account_move.py
+++ b/addons/account/models/account_move.py
@@ -1550,7 +1550,7 @@ class AccountPartialReconcile(models.Model):
                                 'partner_id': line.partner_id.id,
                             })
         if newly_created_move:
-            if move_date > (self.company_id.period_lock_date or '0000-00-00') and newly_created_move.date != move_date:
+            if move_date > (self.company_id.period_lock_date or date.min) and newly_created_move.date != move_date:
                 # The move date should be the maximum date between payment and invoice (in case
                 # of payment in advance). However, we should make sure the move date is not
                 # recorded before the period lock date as the tax statement for this period is