diff --git a/helpers/keyboards.py b/helpers/keyboards.py
index 8872b1e..b3038ff 100644
--- a/helpers/keyboards.py
+++ b/helpers/keyboards.py
@@ -14,7 +14,7 @@ def main_keyboard(telegram_id):
     alice_exp = platform.get_experiment('alice')
     try:
         user = object()
-        user.platform_staff = lambda: platform.is_staff(telegram_id=telegram_id)
+        user.__setattr__('platform_staff', lambda: platform.is_staff(telegram_id=telegram_id))
         alice_exp_enabled = eval(alice_exp['condition'])
     except Exception as exc:
         logging.info(exc)