diff --git a/app/cabinet/routes/subscription_modules/traffic.py b/app/cabinet/routes/subscription_modules/traffic.py
index f6c3a439..4a186a43 100644
--- a/app/cabinet/routes/subscription_modules/traffic.py
+++ b/app/cabinet/routes/subscription_modules/traffic.py
@@ -326,7 +326,11 @@ async def purchase_traffic(
         else:
             await subscription_service.update_remnawave_user(db, subscription)
             if subscription.status == 'active':
-                _enable_uuid = subscription.remnawave_uuid if settings.is_multi_tariff_enabled() else getattr(user, 'remnawave_uuid', None)
+                _enable_uuid = (
+                    subscription.remnawave_uuid
+                    if settings.is_multi_tariff_enabled()
+                    else getattr(user, 'remnawave_uuid', None)
+                )
                 if _enable_uuid:
                     await subscription_service.enable_remnawave_user(_enable_uuid)
     except Exception as e:
diff --git a/app/services/monitoring_service.py b/app/services/monitoring_service.py
index 67bba176..4501539b 100644
--- a/app/services/monitoring_service.py
+++ b/app/services/monitoring_service.py
@@ -912,7 +912,11 @@ class MonitoringService:
                                     await batch_db.commit()
                                     await self.subscription_service.create_remnawave_user(batch_db, subscription)
                                 else:
-                                    _enable_uuid = subscription.remnawave_uuid if settings.is_multi_tariff_enabled() else user.remnawave_uuid
+                                    _enable_uuid = (
+                                        subscription.remnawave_uuid
+                                        if settings.is_multi_tariff_enabled()
+                                        else user.remnawave_uuid
+                                    )
                                     if _enable_uuid:
                                         await self.subscription_service.enable_remnawave_user(_enable_uuid)
                             except Exception as api_error: