diff --git a/examples/openactive-csp/index.php b/examples/openactive-csp/index.php
index 3f4a912..38e6135 100644
--- a/examples/openactive-csp/index.php
+++ b/examples/openactive-csp/index.php
@@ -24,7 +24,7 @@
     "platformName" => "AcmeBooker",
     "platformSoftwareVersion" => "2.0",
     "platformUrl" => "https://acmebooker.example.com/",
-    "backgroundImageUrl" => "https://data.better.org.uk/images/bg.jpg",
+    "backgroundImageUrl" => "",
     "dateFirstPublished" => "2019-10-28",
     "openBookingAPIBaseUrl" => "https://reference-implementation.openactive.io/api/openbooking",
     "openBookingAPIAuthenticationAuthorityUrl" => "https://auth.reference-implementation.openactive.io",