diff --git a/src/lib/app.ts b/src/lib/app.ts
index 5458519d3e..879ddc0688 100644
--- a/src/lib/app.ts
+++ b/src/lib/app.ts
@@ -75,7 +75,7 @@ export default async function getApp(
     // Preflight requests should not have Authorization headers,
     // so this must be handled before the API token middleware.
     app.options(
-        '/api/frontend*',
+        `${baseUriPath}/api/frontend*`,
         conditionalMiddleware(
             () => config.flagResolver.isEnabled('embedProxy'),
             corsOriginMiddleware(services),
diff --git a/src/lib/middleware/api-token-middleware.ts b/src/lib/middleware/api-token-middleware.ts
index 9b000019c4..0fd689f98e 100644
--- a/src/lib/middleware/api-token-middleware.ts
+++ b/src/lib/middleware/api-token-middleware.ts
@@ -15,7 +15,7 @@ const isProxyApi = ({ path }) => {
     // Handle all our current proxy paths which will redirect to the new
     // embedded proxy endpoint
     return (
-        path.startsWith('/api/default/proxy') ||
+        path.startsWith('/api/proxy') ||
         path.startsWith('/api/development/proxy') ||
         path.startsWith('/api/production/proxy') ||
         path.startsWith('/api/frontend')