diff --git a/conf.py b/conf.py
index c242e4db5..b4ef3ee84 100644
--- a/conf.py
+++ b/conf.py
@@ -189,7 +189,6 @@ sphinx.transforms.i18n.docname_to_domain = (
 versions_names = {
     'master': "Master",
     'saas-15.2': "Odoo Online",
-    'saas-15.1': "Odoo Online",
     '15.0': "Odoo 15",
     '14.0': "Odoo 14",
     '13.0': "Odoo 13",