diff --git a/app/models/salon.py b/app/models/salon.py
index 0b4639c..99b8cae 100644
--- a/app/models/salon.py
+++ b/app/models/salon.py
@@ -408,7 +408,7 @@ class Transaction(db.Model):
                           nullable=False, index=True)
     location_id = db.Column(db.Integer, db.ForeignKey("locations.id"),
                             nullable=False, index=True)
-    appointment_id = db.Column(db.Integer, db.ForeignKey("appointments.id"),
+    appointment_id = db.Column(db.Integer, db.ForeignKey("appointments.id", use_alter=True, name="fk_transaction_appointment"),
                                nullable=True)
     customer_id = db.Column(db.Integer, db.ForeignKey("customers.id"),
                             nullable=True)