diff --git a/series b/series
index 2ed7a27..e2c3706 100644
--- a/series
+++ b/series
@@ -74,3 +74,4 @@ issue7961002_40001.diff
 #chart_not_translatable.diff
 #024726_account_bank_remove_company.diff
 #024726_account_payment_type_remove_company.diff
+#stock_lot_improve_sync_inventory_to_outgoing.diff
diff --git a/stock_lot_improve_sync_inventory_to_outgoing.diff b/stock_lot_improve_sync_inventory_to_outgoing.diff
new file mode 100644
index 0000000..392874e
--- /dev/null
+++ b/stock_lot_improve_sync_inventory_to_outgoing.diff
@@ -0,0 +1,28 @@
+diff -r 973556094501 stock.py
+--- a/trytond/trytond/modules/stock_lot/stock.py	Mon Oct 26 13:23:09 2015 +0100
++++ b/trytond/trytond/modules/stock_lot/stock.py	Mon Oct 26 13:45:41 2015 +0100
+@@ -133,19 +133,17 @@
+                     out_quantity = Uom.compute_qty(out_move.uom,
+                         out_move.quantity, out_move.product.default_uom,
+                         round=False)
++                    out_move_vals = {}
+                     if quantity < out_quantity:
+                         outgoing_moves.extend(Move.copy([out_move], default={
+                                     'quantity': Uom.round(
+                                         out_quantity - quantity,
+                                         out_move.uom.rounding),
+                                     }))
+-                        Move.write([out_move], {
+-                                'quantity': Uom.round(
+-                                        quantity, out_move.uom.rounding),
+-                                })
+-                    Move.write([out_move], {
+-                            'lot': move.lot.id,
+-                            })
++                        out_move_vals['quantity'] = Uom.round(quantity,
++                            out_move.uom.rounding)
++                    out_move_vals['lot'] = move.lot.id
++                    Move.write([out_move], out_move_vals)
+                     quantity -= out_quantity
+                 assert quantity <= move.product.default_uom.rounding
+