diff --git a/addons/account/account_invoice.py b/addons/account/account_invoice.py
index 282c1712d19..ad549311688 100644
--- a/addons/account/account_invoice.py
+++ b/addons/account/account_invoice.py
@@ -1143,12 +1143,12 @@ class account_invoice(osv.osv):
         if not ids:
             return []
         types = {
-                'out_invoice': 'Invoice ',
-                'in_invoice': 'Sup. Invoice ',
-                'out_refund': 'Refund ',
-                'in_refund': 'Supplier Refund ',
+                'out_invoice': _('Invoice'),
+                'in_invoice': _('Supplier Invoice'),
+                'out_refund': _('Refund'),
+                'in_refund': _('Supplier Refund'),
                 }
-        return [(r['id'], (r['number']) or types[r['type']] + (r['name'] or '')) for r in self.read(cr, uid, ids, ['type', 'number', 'name'], context, load='_classic_write')]
+        return [(r['id'], '%s %s' % (r['number'] or types[r['type']], r['name'] or '')) for r in self.read(cr, uid, ids, ['type', 'number', 'name'], context, load='_classic_write')]
 
     def name_search(self, cr, user, name, args=None, operator='ilike', context=None, limit=100):
         if not args: