diff --git a/endpoints/webhooks.py b/endpoints/webhooks.py
index d8fa1e7e4..bf32c53d2 100644
--- a/endpoints/webhooks.py
+++ b/endpoints/webhooks.py
@@ -30,7 +30,7 @@ def stripe_webhook():
 
   event_type = request_data['type'] if 'type' in request_data else None
   if event_type == 'charge.succeeded':
-    invoice_id = ['data']['object']['invoice']
+    invoice_id = request_data['data']['object']['invoice']
 
     if user and user.invoice_email:
       # Lookup the invoice.