diff --git a/addons/account/models/account_journal.py b/addons/account/models/account_journal.py
index 640741b5665..9133d8c9f15 100644
--- a/addons/account/models/account_journal.py
+++ b/addons/account/models/account_journal.py
@@ -717,6 +717,7 @@ class AccountJournal(models.Model):
                 if not invoice:
                     invoice = self.env['account.move'].create({})
                 invoice.with_context(no_new_invoice=True).message_post(attachment_ids=[attachment.id])
+                attachment.write({'res_model': 'account.move', 'res_id': invoice.id})
                 invoices += invoice
         return invoices