diff --git a/selfprivacy_api/actions/users.py b/selfprivacy_api/actions/users.py
index bf1e571..7dacdaf 100644
--- a/selfprivacy_api/actions/users.py
+++ b/selfprivacy_api/actions/users.py
@@ -29,7 +29,7 @@ from selfprivacy_api.repositories.users.exceptions import (
 
 domain = get_domain()
 
-DEFAULT_GROUPS = [f"idm_all_persons@{domain}", "idm_all_accounts@{domain}"]
+DEFAULT_GROUPS = [f"idm_all_persons@{domain}", f"idm_all_accounts@{domain}"]
 
 logger = logging.getLogger(__name__)