diff --git a/addons/sale/wizard/sale_make_invoice_advance.py b/addons/sale/wizard/sale_make_invoice_advance.py
index c1f05a9e6f2..c8c1c3b9c6a 100644
--- a/addons/sale/wizard/sale_make_invoice_advance.py
+++ b/addons/sale/wizard/sale_make_invoice_advance.py
@@ -113,7 +113,7 @@ class sale_advance_payment_inv(osv.osv_memory):
                     res['account_id'] = account_id
                     if not res.get('account_id'):
                         raise osv.except_osv(_('Configuration Error !'),
-                                _('There is no income account defined '))
+                                _('There is no income account defined as global property.'))
 
                 if not res.get('account_id'):
                     raise osv.except_osv(_('Configuration Error !'),