diff --git a/passbook/lib/views.py b/passbook/lib/views.py
index 69472b857..2d97dbc06 100644
--- a/passbook/lib/views.py
+++ b/passbook/lib/views.py
@@ -36,6 +36,6 @@ def bad_request_message(
     return TemplateResponse(
         request,
         template,
-        {"message": message, "card_title": _(title)},
+        {"message": message, "title": _(title)},
         status=400,
     )