diff --git a/blockchain_integration/pi_network/payment_gateways/braintree.py b/blockchain_integration/pi_network/payment_gateways/braintree.py
index b9ce58969..adfbf7354 100644
--- a/blockchain_integration/pi_network/payment_gateways/braintree.py
+++ b/blockchain_integration/pi_network/payment_gateways/braintree.py
@@ -1,5 +1,6 @@
 import braintree
 
+
 class BraintreePaymentGateway:
     def __init__(self, merchant_id, public_key, private_key):
         self.merchant_id = merchant_id
@@ -8,8 +9,5 @@ def __init__(self, merchant_id, public_key, private_key):
         braintree.Configuration.configure(merchant_id, public_key, private_key)
 
     def create_payment(self, amount, currency):
-        payment = braintree.Transaction.sale({
-            'amount': amount,
-            'currency': currency
-        })
+        payment = braintree.Transaction.sale({"amount": amount, "currency": currency})
         return payment