diff --git a/packages/adapter-vercel/files/serverless.js b/packages/adapter-vercel/files/serverless.js
index a8f774be9424..a6be08a65782 100644
--- a/packages/adapter-vercel/files/serverless.js
+++ b/packages/adapter-vercel/files/serverless.js
@@ -36,6 +36,12 @@ export default async (req, res) => {
 
 	const request = await getRequest({ base: `https://${req.headers.host}`, request: req });
 
+	const route_id = request.headers.get('x-sveltekit-matched-route');
+
+	if (route_id) {
+		res.setHeader('x-matched-route', route_id);
+	}
+
 	setResponse(
 		res,
 		await server.respond(request, {
diff --git a/packages/kit/src/runtime/server/respond.js b/packages/kit/src/runtime/server/respond.js
index 81b30e0756a5..34520a8d0b4d 100644
--- a/packages/kit/src/runtime/server/respond.js
+++ b/packages/kit/src/runtime/server/respond.js
@@ -272,6 +272,7 @@ export async function respond(request, options, manifest, state) {
 				route = candidate;
 				event.route = { id: route.id };
 				event.params = decode_params(matched);
+				headers['x-sveltekit-matched-route'] = route.id;
 				break;
 			}
 		}