diff --git a/addons/hr_timesheet_invoice/wizard/hr_timesheet_invoice_create.py b/addons/hr_timesheet_invoice/wizard/hr_timesheet_invoice_create.py
index 0945b8f81fb..c9b2439596d 100644
--- a/addons/hr_timesheet_invoice/wizard/hr_timesheet_invoice_create.py
+++ b/addons/hr_timesheet_invoice/wizard/hr_timesheet_invoice_create.py
@@ -103,7 +103,7 @@ class account_analytic_line(osv.osv):
                 if not product:
                     raise osv.except_osv(_('Error'), _('There is no product defined for the line %s. Please select one or force the product through the wizard.') % (line_name))
                 factor = invoice_factor_obj.browse(cr, uid, factor_id, context=context2)
-                factor_name = product_obj.name_get(cr, uid, product_id, context=context2)[1] 
+                factor_name = product_obj.name_get(cr, uid, [product_id], context=context2)[0][1] 
                 if factor.customer_name:
                     factor_name += ' - ' + factor.customer_name