diff --git a/app/cabinet/routes/subscription.py b/app/cabinet/routes/subscription.py
index 5f470646..bb70b208 100644
--- a/app/cabinet/routes/subscription.py
+++ b/app/cabinet/routes/subscription.py
@@ -196,7 +196,9 @@ def _subscription_to_response(
         daily_price_kopeks = getattr(subscription.tariff, 'daily_price_kopeks', None)
         if not tariff_name:  # Only set if not passed as parameter
             tariff_name = getattr(subscription.tariff, 'name', None)
-        traffic_reset_mode = getattr(subscription.tariff, 'traffic_reset_mode', None) or settings.DEFAULT_TRAFFIC_RESET_STRATEGY
+        traffic_reset_mode = (
+            getattr(subscription.tariff, 'traffic_reset_mode', None) or settings.DEFAULT_TRAFFIC_RESET_STRATEGY
+        )
 
     # Calculate next daily charge time (24 hours after last charge)
     next_daily_charge_at = None
diff --git a/app/database/models.py b/app/database/models.py
index ba99babb..61a92f76 100644
--- a/app/database/models.py
+++ b/app/database/models.py
@@ -1476,7 +1476,9 @@ class ReferralEarning(Base):
     reason = Column(String(100), nullable=False)
 
     referral_transaction_id = Column(Integer, ForeignKey('transactions.id'), nullable=True)
-    campaign_id = Column(Integer, ForeignKey('advertising_campaigns.id', ondelete='SET NULL'), nullable=True, index=True)
+    campaign_id = Column(
+        Integer, ForeignKey('advertising_campaigns.id', ondelete='SET NULL'), nullable=True, index=True
+    )
 
     created_at = Column(DateTime(timezone=True), default=func.now())