diff --git a/tests/utils/paymentRequest.py b/tests/utils/paymentRequest.py
index d9e6490..ca5ad6c 100644
--- a/tests/utils/paymentRequest.py
+++ b/tests/utils/paymentRequest.py
@@ -12,7 +12,7 @@
 
 import os
 
-center_id = os.environ["SANDBOX_CENTER_ID"]
+center_id = "6474628142727168"
 
 
 def generateExamplePaymentRequestsJson(n=1):