diff --git a/addons/account_edi_ubl_cii/models/account_edi_format.py b/addons/account_edi_ubl_cii/models/account_edi_format.py
index 0bbf5c89d85..6f3e9aed969 100644
--- a/addons/account_edi_ubl_cii/models/account_edi_format.py
+++ b/addons/account_edi_ubl_cii/models/account_edi_format.py
@@ -119,9 +119,9 @@ class AccountEdiFormat(models.Model):
                 'raw': xml_content,
                 'mimetype': 'application/xml',
             }
-            # we don't want the Factur-X and E-FFF xml to appear in the attachment of the invoice when confirming it
-            # E-FFF will appear after the pdf is generated, Factur-X will never appear (it's contained in the PDF)
-            if self.code not in ['facturx_1_0_05', 'efff_1']:
+            # we don't want the Factur-X, E-FFF and NLCIUS xml to appear in the attachment of the invoice when confirming it
+            # E-FFF and NLCIUS will appear after the pdf is generated, Factur-X will never appear (it's contained in the PDF)
+            if self.code not in ['facturx_1_0_05', 'efff_1', 'nlcius_1']:
                 attachment_create_vals.update({'res_id': invoice.id, 'res_model': 'account.move'})
 
             attachment = self.env['ir.attachment'].create(attachment_create_vals)