diff --git a/capsulflask/__init__.py b/capsulflask/__init__.py
index 7261bf4..55643bb 100644
--- a/capsulflask/__init__.py
+++ b/capsulflask/__init__.py
@@ -140,7 +140,7 @@ else:
 app.config['HTTP_CLIENT'] = MyHTTPClient(timeout_seconds=int(app.config['INTERNAL_HTTP_TIMEOUT_SECONDS']))
 
 app.config['BTCPAY_ENABLED'] = False
-if app.config['BTCPAY_URL'] is not "":
+if app.config['BTCPAY_URL'] != "":
   try:
     app.config['BTCPAY_CLIENT'] = btcpay.Client(api_uri=app.config['BTCPAY_URL'], pem=app.config['BTCPAY_PRIVATE_KEY'])
     app.config['BTCPAY_ENABLED'] = True