diff --git a/doc/source/admin/advanced-configuration.rst b/doc/source/admin/advanced-configuration.rst
index 501b2d8605..c8cf984e24 100644
--- a/doc/source/admin/advanced-configuration.rst
+++ b/doc/source/admin/advanced-configuration.rst
@@ -217,7 +217,7 @@ and then put it to ``/etc/kolla/config/neutron/policy.json``.
 
 .. note::
 
-   Currently kolla-ansible only support JSON format for policy file.
+   Currently kolla-ansible only support JSON and YAML format for policy file.
 
 The operator can make these changes after services were already deployed by
 using following command: