diff --git a/addons/stock/product.py b/addons/stock/product.py
index 21e5512383d..2e7b8a6a2ec 100644
--- a/addons/stock/product.py
+++ b/addons/stock/product.py
@@ -169,7 +169,9 @@ class product_product(osv.osv):
         moves_in = dict(map(lambda x: (x['product_id'][0], x['product_qty']), moves_in))
         moves_out = dict(map(lambda x: (x['product_id'][0], x['product_qty']), moves_out))
         res = {}
-        for product in self.browse(cr, uid, ids, context=context):
+        ctx = context.copy()
+        ctx.update({'prefetch_fields': False})
+        for product in self.browse(cr, uid, ids, context=ctx):
             id = product.id
             qty_available = float_round(quants.get(id, 0.0), precision_rounding=product.uom_id.rounding)
             incoming_qty = float_round(moves_in.get(id, 0.0), precision_rounding=product.uom_id.rounding)