diff --git a/capsulflask/__init__.py b/capsulflask/__init__.py
index 526b04b..4ae85de 100644
--- a/capsulflask/__init__.py
+++ b/capsulflask/__init__.py
@@ -30,7 +30,7 @@ class StdoutMockFlaskMail:
 load_dotenv(find_dotenv())
 
 for var_name in [
-  "SPOKE_HOST_TOKEN", "HUB_TOKEN", "STRIPE_PUBLISHABLE_KEY",
+  "SPOKE_HOST_TOKEN", "HUB_TOKEN", "STRIPE_SECRET_KEY",
   "BTCPAY_PRIVATE_KEY", "MAIL_PASSWORD"
 ]:
   var = os.environ.get(f"{var_name}_FILE", False)