diff --git a/stock_mts_mto_rule/__openerp__.py b/stock_mts_mto_rule/__openerp__.py
index 67640dd6b..faff1942a 100644
--- a/stock_mts_mto_rule/__openerp__.py
+++ b/stock_mts_mto_rule/__openerp__.py
@@ -21,7 +21,7 @@
 ##############################################################################
 
 {'name': 'Stock MTS+MTO Rule',
- 'version': '9.0.1.0.0',
+ 'version': '9.0.1.1.0',
  'author': 'Akretion,Odoo Community Association (OCA)',
  'website': 'http://www.akretion.com',
  'license': 'AGPL-3',
diff --git a/stock_mts_mto_rule/model/procurement.py b/stock_mts_mto_rule/model/procurement.py
index 14d66b2cf..bc3a07473 100644
--- a/stock_mts_mto_rule/model/procurement.py
+++ b/stock_mts_mto_rule/model/procurement.py
@@ -28,7 +28,8 @@ class ProcurementOrder(models.Model):
     mts_mto_procurement_id = fields.Many2one(
         'procurement.order',
         string="Mto+Mts Procurement",
-        copy=False)
+        copy=False,
+        index=True)
     mts_mto_procurement_ids = fields.One2many(
         'procurement.order',
         'mts_mto_procurement_id',