diff --git a/addons/stock/wizard/stock_change_product_qty.py b/addons/stock/wizard/stock_change_product_qty.py
index 961eb2e0aef..8843581d70a 100644
--- a/addons/stock/wizard/stock_change_product_qty.py
+++ b/addons/stock/wizard/stock_change_product_qty.py
@@ -98,7 +98,7 @@ class stock_change_product_qty(osv.osv_memory):
'product_id': data.product_id.id,
'location_id': data.location_id.id,
'lot_id': data.lot_id.id}, context=context)
- product = data.product_id.with_context(location=data.location_id.id)
+ product = data.product_id.with_context(location=data.location_id.id, lot_id= data.lot_id.id)
th_qty = product.qty_available
line_data = {
'inventory_id': inventory_id,
diff --git a/addons/stock/wizard/stock_change_product_qty_view.xml b/addons/stock/wizard/stock_change_product_qty_view.xml
index 10bad736bb2..7c11189d1c3 100644
--- a/addons/stock/wizard/stock_change_product_qty_view.xml
+++ b/addons/stock/wizard/stock_change_product_qty_view.xml
@@ -10,7 +10,11 @@
+ When you select a serial number (lot), the quantity is corrected with respect to + the quantity of that serial number (lot) and not to the total quantity of the product. +