diff --git a/addons/account/models/ir_actions_report.py b/addons/account/models/ir_actions_report.py
index 4aa8bb400c2..4c4ba1ead36 100644
--- a/addons/account/models/ir_actions_report.py
+++ b/addons/account/models/ir_actions_report.py
@@ -29,4 +29,7 @@ class IrActionsReport(models.Model):
         # don't save the 'account.report_original_vendor_bill' report as it's just a mean to print existing attachments
         if self.report_name == 'account.report_original_vendor_bill':
             return None
-        return super(IrActionsReport, self)._postprocess_pdf_report(record, buffer)
+        res = super(IrActionsReport, self)._postprocess_pdf_report(record, buffer)
+        if self.model == 'account.move' and record.is_sale_document(include_receipts=True):
+            self.retrieve_attachment(record).register_as_main_attachment(force=False)
+        return res