diff --git a/openslides/participant/models.py b/openslides/participant/models.py
index 17d95dea4..46c7e56b0 100644
--- a/openslides/participant/models.py
+++ b/openslides/participant/models.py
@@ -94,4 +94,5 @@ def default_config(sender, key, **kwargs):
     return {
         'participant_pdf_system_url': 'http://example.com:8000',
         'participant_pdf_welcometext': _('Welcome to OpenSlides!'),
+        'admin_password': None,
     }.get(key)