diff --git a/addons/repair/models/repair.py b/addons/repair/models/repair.py
index 62b798c0081..f8c8d98655d 100644
--- a/addons/repair/models/repair.py
+++ b/addons/repair/models/repair.py
@@ -204,10 +204,10 @@ class Repair(models.Model):
     @api.ondelete(at_uninstall=False)
     def _unlink_except_confirmed(self):
         for order in self:
+            if order.invoice_id and order.invoice_id.posted_before:
+                raise UserError(_('You can not delete a repair order which is linked to an invoice which has been posted once.'))
             if order.state not in ('draft', 'cancel'):
                 raise UserError(_('You can not delete a repair order once it has been confirmed. You must first cancel it.'))
-            if order.state == 'cancel' and order.invoice_id and order.invoice_id.posted_before:
-                raise UserError(_('You can not delete a repair order which is linked to an invoice which has been posted once.'))
 
     @api.model
     def create(self, vals):