docs/upgrading/README.md

 ```
 
 - Edit the same file and look for the word `org.matrix.msc3575.proxy`. Change it for `m.identity_server`
-- Add the following value to the file `/opt/matrix/config/synapse/homeserver.yaml` (Change the `DOMAIN` value accordingly!!):
+- Add the following values to the file `/opt/matrix/config/synapse/homeserver.yaml` (Change the `DOMAIN` value accordingly!!):
 
 ```yaml
+enable_authenticated_media: False
 public_baseurl: "https://DOMAIN"
 ```
 
 % systemctl restart matrix.service
 ```
 
-- Give it a few minutes to come back up and you are ready to go :)
+- Give it a few minutes to come back up and you are ready to go :)