diff --git a/addons/account/models/account_reconcile_model.py b/addons/account/models/account_reconcile_model.py
index b4fb63aa036..0941a34fb2f 100644
--- a/addons/account/models/account_reconcile_model.py
+++ b/addons/account/models/account_reconcile_model.py
@@ -684,6 +684,8 @@ class AccountReconcileModel(models.Model):
                             new_aml_dicts = reconciliation_results['new_aml_dicts']
                             if reconciliation_results['open_balance_dict']:
                                 new_aml_dicts.append(reconciliation_results['open_balance_dict'])
+                            if not line.partner_id and partner:
+                                line.partner_id = partner
                             counterpart_moves = line.process_reconciliation(
                                 counterpart_aml_dicts=reconciliation_results['counterpart_aml_dicts'],
                                 payment_aml_rec=reconciliation_results['payment_aml_rec'],
@@ -715,6 +717,8 @@ class AccountReconcileModel(models.Model):
                         new_aml_dicts = reconciliation_results['new_aml_dicts']
                         if reconciliation_results['open_balance_dict']:
                             new_aml_dicts.append(reconciliation_results['open_balance_dict'])
+                        if not line.partner_id and partner:
+                            line.partner_id = partner
                         counterpart_moves = line.process_reconciliation(
                             counterpart_aml_dicts=reconciliation_results['counterpart_aml_dicts'],
                             payment_aml_rec=reconciliation_results['payment_aml_rec'],
diff --git a/addons/account/static/src/js/reconciliation/reconciliation_model.js b/addons/account/static/src/js/reconciliation/reconciliation_model.js
index 14b0f980651..c76768103a9 100644
--- a/addons/account/static/src/js/reconciliation/reconciliation_model.js
+++ b/addons/account/static/src/js/reconciliation/reconciliation_model.js
@@ -1392,7 +1392,6 @@ var ManualModel = StatementModel.extend({
             }
             line.reconciliation_proposition = [];
         });
-
         if (process_reconciliations.length) {
             def = self._rpc({
                     model: 'account.reconciliation.widget',