diff --git a/SmallPART.md b/SmallPART.md
index 925868f..859ca73 100644
--- a/SmallPART.md
+++ b/SmallPART.md
@@ -14,6 +14,7 @@ SmallPART courses can be embedded into a LMS (Learning Management System) like M
 
 * you need to replace ```boulder.egroupware.org``` with your own EGroupware Domain and for EGroupware Cloud hosting use ```egw``` instead of ```egroupware``` for the path
 ![](https://raw.githubusercontent.com/wiki/EGroupware/egroupware/pics/MoodleLTItool.png)
+> For the public key Moodle unfortunately does not support a JWK URL (JSON Web Key), so you have to get it from your server under /var/lib/egroupware/default/files/openid/public.key. If you have no access to the server you can use the JWK URL (https://boulder.egroupware.org/egroupware/openid/endpoint.php/jwks) to fetch the key and [use a service to convert it](https://8gwifi.org/jwkconvertfunctions.jsp) (use only the key object ``` {"alg": "RS256", "kty": "RSA", ...}```, not the whole array!)
 
 * then display the configuration details in Moodle
 ![](https://raw.githubusercontent.com/wiki/EGroupware/egroupware/pics/MoodleLTIdetails.png)