diff --git a/customHttp.yml b/customHttp.yml
index a629662d896..63a5d5028a2 100644
--- a/customHttp.yml
+++ b/customHttp.yml
@@ -17,5 +17,5 @@ customHeaders:
       - key: 'Pragma'
         value: 'no-cache'
       - key: 'Content-Security-Policy'
-        value: 'upgrade-insecure-requests; frame-ancestors none;'
+        value: "upgrade-insecure-requests; frame-ancestors 'none';"
       # CSP also set in _document.tsx meta tag