diff --git a/addons/website/models/website.py b/addons/website/models/website.py
index a4848313a9c..1b63929759e 100644
--- a/addons/website/models/website.py
+++ b/addons/website/models/website.py
@@ -815,7 +815,7 @@ class Menu(models.Model):
             url = self.page_id.sudo().url
         else:
             url = self.url
-            if not self.url.startswith('/'):
+            if url and not self.url.startswith('/'):
                 if '@' in self.url:
                     if not self.url.startswith('mailto'):
                         url = 'mailto:%s' % self.url