diff --git a/addons/website/models/mixins.py b/addons/website/models/mixins.py
index 53c2bba5058..770a5e6d186 100644
--- a/addons/website/models/mixins.py
+++ b/addons/website/models/mixins.py
@@ -285,7 +285,7 @@ class WebsitePublishedMultiMixin(WebsitePublishedMixin):
     def open_website_url(self):
         return {
             'type': 'ir.actions.act_url',
-            'url': url_join(self.website_id.domain, self.website_url) if self.website_id else self.website_url,
+            'url': url_join(self.website_id.domain, self.website_url) if self.website_id.domain else self.website_url,
             'target': 'self',
         }