diff --git a/blockchain_integration/pi_network/payment_gateways/bni.py b/blockchain_integration/pi_network/payment_gateways/bni.py
index a5e395dba..35d603812 100644
--- a/blockchain_integration/pi_network/payment_gateways/bni.py
+++ b/blockchain_integration/pi_network/payment_gateways/bni.py
@@ -1,6 +1,7 @@
 # payment_gateways/bni.py
 import requests
 
+
 class BNIPaymentGateway:
     def __init__(self, api_key, api_secret):
         self.api_key = api_key
@@ -10,13 +11,12 @@ def __init__(self, api_key, api_secret):
     def make_payment(self, amount, recipient_account_number):
         headers = {
             "Authorization": f"Bearer {self.api_key}",
-            "Content-Type": "application/json"
-        }
-        data = {
-            "amount": amount,
-            "recipient_account_number": recipient_account_number
+            "Content-Type": "application/json",
         }
-        response = requests.post(f"{self.base_url}/payments", headers=headers, json=data)
+        data = {"amount": amount, "recipient_account_number": recipient_account_number}
+        response = requests.post(
+            f"{self.base_url}/payments", headers=headers, json=data
+        )
         if response.status_code == 200:
             return response.json()
         else: