diff --git a/account_banking_mandate/__manifest__.py b/account_banking_mandate/__manifest__.py
index 553c4f7dfde7..7bb7a3f0d1c4 100644
--- a/account_banking_mandate/__manifest__.py
+++ b/account_banking_mandate/__manifest__.py
@@ -7,7 +7,7 @@
 {
     'name': 'Account Banking Mandate',
     'summary': 'Banking mandates',
-    'version': '10.0.1.1.0',
+    'version': '10.0.1.1.1',
     'license': 'AGPL-3',
     'author': "Compassion CH, "
               "Tecnativa, "
diff --git a/account_banking_mandate/models/account_invoice.py b/account_banking_mandate/models/account_invoice.py
index 7c086d9f936b..7adb49f107a8 100644
--- a/account_banking_mandate/models/account_invoice.py
+++ b/account_banking_mandate/models/account_invoice.py
@@ -65,7 +65,7 @@ def _prepare_refund(
     @api.onchange('partner_id', 'company_id')
     def _onchange_partner_id(self):
         """Select by default the first valid mandate of the partner"""
-        super(AccountInvoice, self)._onchange_partner_id()
+        res = super(AccountInvoice, self)._onchange_partner_id()
         if (
                 self.type == 'out_invoice' and
                 self.partner_id.customer_payment_mode_id.
@@ -81,6 +81,7 @@ def _onchange_partner_id(self):
                 self.mandate_id = mandates[0]
         else:
             self.mandate_id = False
+        return res
 
     @api.onchange('payment_mode_id')
     def payment_mode_id_change(self):