diff --git a/addons/sale_stock/models/stock.py b/addons/sale_stock/models/stock.py
index a346b815d20..b28a3e4c2ef 100644
--- a/addons/sale_stock/models/stock.py
+++ b/addons/sale_stock/models/stock.py
@@ -11,7 +11,7 @@ class StockLocationRoute(models.Model):
 
 class StockMove(models.Model):
     _inherit = "stock.move"
-    sale_line_id = fields.Many2one('sale.order.line', 'Sale Line')
+    sale_line_id = fields.Many2one('sale.order.line', 'Sale Line', index=True)
 
     @api.model
     def _prepare_merge_moves_distinct_fields(self):
diff --git a/addons/stock/models/stock_quant.py b/addons/stock/models/stock_quant.py
index 80bd07e9a80..20a4bd640c6 100644
--- a/addons/stock/models/stock_quant.py
+++ b/addons/stock/models/stock_quant.py
@@ -20,7 +20,7 @@ class StockQuant(models.Model):
 
     product_id = fields.Many2one(
         'product.product', 'Product',
-        ondelete='restrict', readonly=True, required=True)
+        ondelete='restrict', readonly=True, required=True, index=True)
     # so user can filter on template in webclient
     product_tmpl_id = fields.Many2one(
         'product.template', string='Product Template',
@@ -32,7 +32,7 @@ class StockQuant(models.Model):
         string='Company', store=True, readonly=True)
     location_id = fields.Many2one(
         'stock.location', 'Location',
-        auto_join=True, ondelete='restrict', readonly=True, required=True)
+        auto_join=True, ondelete='restrict', readonly=True, required=True, index=True)
     lot_id = fields.Many2one(
         'stock.production.lot', 'Lot/Serial Number',
         ondelete='restrict', readonly=True)