diff --git a/tests/conftest.py b/tests/conftest.py
index 889e9b533..95ab104d6 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -343,4 +343,5 @@ def _settings_cleanup(settings: Settings):
     settings.stripe_limits = FiatProviderLimits()
     settings.lnbits_require_user_activation = False
     settings.lnbits_user_activation_by_invitation_code = False
+    settings.lnbits_register_reusable_activation_code = ""
     settings.lnbits_register_one_time_activation_codes = []