diff --git a/addons/account/models/account_move.py b/addons/account/models/account_move.py
index 384e9b0f8e7..bce56c0829f 100644
--- a/addons/account/models/account_move.py
+++ b/addons/account/models/account_move.py
@@ -1847,6 +1847,6 @@ class AccountFullReconcile(models.Model):
         # 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 after the end of year closing.
-        if move_date > company.fiscalyear_lock_date:
+        if move_date > (company.fiscalyear_lock_date or '0000-00-00'):
             res['date'] = move_date
         return res