diff --git a/account_payment_order/models/account_move_line.py b/account_payment_order/models/account_move_line.py
index 2e88af00d..422510ed1 100644
--- a/account_payment_order/models/account_move_line.py
+++ b/account_payment_order/models/account_move_line.py
@@ -14,7 +14,9 @@ class AccountMoveLine(models.Model):
         help='Bank account on which we should pay the supplier')
     bank_payment_line_id = fields.Many2one(
         'bank.payment.line', string='Bank Payment Line',
-        readonly=True)
+        readonly=True,
+        index=True,
+    )
     payment_line_ids = fields.One2many(
         comodel_name='account.payment.line',
         inverse_name='move_line_id',
diff --git a/account_payment_order/models/account_payment_line.py b/account_payment_order/models/account_payment_line.py
index d12e8b9ba..96873be5a 100644
--- a/account_payment_order/models/account_payment_line.py
+++ b/account_payment_order/models/account_payment_line.py
@@ -58,7 +58,9 @@ class AccountPaymentLine(models.Model):
         ], string='Communication Type', required=True, default='normal')
     # v8 field : state
     bank_line_id = fields.Many2one(
-        'bank.payment.line', string='Bank Payment Line', readonly=True)
+        'bank.payment.line', string='Bank Payment Line', readonly=True,
+        index=True,
+    )
 
     _sql_constraints = [(
         'name_company_unique',
diff --git a/account_payment_partner/models/account_move_line.py b/account_payment_partner/models/account_move_line.py
index 3ac272b95..47c1518c8 100644
--- a/account_payment_partner/models/account_move_line.py
+++ b/account_payment_partner/models/account_move_line.py
@@ -9,4 +9,8 @@ class AccountMoveLine(models.Model):
     _inherit = 'account.move.line'
 
     payment_mode_id = fields.Many2one(
-        'account.payment.mode', string='Payment Mode', ondelete='restrict')
+        'account.payment.mode',
+        string='Payment Mode',
+        ondelete='restrict',
+        index=True,
+    )