diff --git a/jupyter/base/values/values.yaml b/jupyter/base/values/values.yaml
index 0a0199d..5a6629d 100644
--- a/jupyter/base/values/values.yaml
+++ b/jupyter/base/values/values.yaml
@@ -16,6 +16,7 @@ hub:
       c.GenericOAuthenticator.client_secret = os.environ['NEXTCLOUD_CLIENT_ID']
       c.GenericOAuthenticator.login_service = 'Sunet Drive'
       c.GenericOAuthenticator.username_claim = lambda r: r.get('ocs', {}).get('data', {}).get('id')
+      c.GenericOAuthenticator.username_key = lambda r: r.get('ocs', {}).get('data', {}).get('id')
 
       c.GenericOAuthenticator.authorize_url = 'https://' + os.environ['NEXTCLOUD_HOST'] + '/index.php/apps/oauth2/authorize'
       c.GenericOAuthenticator.token_url = 'https://' + os.environ['NEXTCLOUD_HOST'] + '/index.php/apps/oauth2/api/v1/token'