diff --git a/addons/sale/wizard/sale_make_invoice_advance.py b/addons/sale/wizard/sale_make_invoice_advance.py
index c9eff5e9c6a..006f27eb168 100644
--- a/addons/sale/wizard/sale_make_invoice_advance.py
+++ b/addons/sale/wizard/sale_make_invoice_advance.py
@@ -78,7 +78,7 @@ class sale_advance_payment_inv(osv.osv_memory):
         result = []
         for sale in sale_obj.browse(cr, uid, sale_ids, context=context):
             val = inv_line_obj.product_id_change(cr, uid, [], wizard.product_id.id,
-                    uom=False, partner_id=sale.partner_id.id, fposition_id=sale.fiscal_position.id)
+                    uom_id=False, partner_id=sale.partner_id.id, fposition_id=sale.fiscal_position.id)
             res = val['value']
 
             # determine and check income account