diff --git a/packages/prerender-proxy/lib/handlers/cache-control.ts b/packages/prerender-proxy/lib/handlers/cache-control.ts
index 8543a6ef..b6114c1d 100644
--- a/packages/prerender-proxy/lib/handlers/cache-control.ts
+++ b/packages/prerender-proxy/lib/handlers/cache-control.ts
@@ -7,9 +7,8 @@ export const handler = async (
   const cacheKey = process.env.PRERENDER_CACHE_KEY || "x-prerender-requestid";
   const cacheMaxAge = process.env.PRERENDER_CACHE_MAX_AGE || "0";
   const response = event.Records[0].cf.response;
-
   if (response.headers[`${cacheKey}`]) {
-    response.headers["Cache-Control"] = [
+    response.headers["cache-control"] = [
       {
         key: "Cache-Control",
         value: `max-age=${cacheMaxAge}`,