diff --git a/backend/app/dav/carddav.py b/backend/app/dav/carddav.py
index 8c212d3..a76b7cb 100644
--- a/backend/app/dav/carddav.py
+++ b/backend/app/dav/carddav.py
@@ -196,7 +196,8 @@ def ab_contact_propfind(username, ab_part, filename):
 @basic_auth
 def ab_report(username, ab_part):
     if not ab_part.startswith('ab-'):
-        return Response('Not found', 404)
+        from .caldav import report as _cal_report
+        return _cal_report(subpath=f'{username}/{ab_part}')
     user: User = request.dav_user
     if username != user.username:
         return Response('', 403)