diff --git a/addons/account/models/partner.py b/addons/account/models/partner.py
index 3de5301c621..acc8cfab3ac 100644
--- a/addons/account/models/partner.py
+++ b/addons/account/models/partner.py
@@ -260,7 +260,6 @@ class ResPartner(models.Model):
     def _invoice_total(self):
         account_invoice_report = self.env['account.invoice.report']
         if not self.ids:
-            self.total_invoiced = 0.0
             return True
 
         user_currency_id = self.env.user.company_id.currency_id.id
diff --git a/odoo/models.py b/odoo/models.py
index d58f4d50a4e..e9dcf198c46 100644
--- a/odoo/models.py
+++ b/odoo/models.py
@@ -3923,7 +3923,7 @@ class BaseModel(object):
             # mark missing records in cache with a failed value
             exc = MissingError(
                 _("Record does not exist or has been deleted.")
-                + '\n\n({} {}, {} {})'.format(_('Records:'), (self - existing).ids[:6], _('User:'), self._uid)
+                + u'\n\n({} {}, {} {})'.format(_('Records:'), (self - existing).ids[:6], _('User:'), self._uid)
             )
             (self - existing)._cache.update(FailedValue(exc))
         return existing