diff --git a/lib/handler/cache-handler.js b/lib/handler/cache-handler.js
index b8a882381c2..44b82c4a9bb 100644
--- a/lib/handler/cache-handler.js
+++ b/lib/handler/cache-handler.js
@@ -97,7 +97,7 @@ class CacheHandler {
         statusMessage
       )
 
-    if (
+      if (
       !util.safeHTTPMethods.includes(this.#cacheKey.method) &&
       statusCode >= 200 &&
       statusCode <= 399
@@ -112,13 +112,11 @@ class CacheHandler {
       return downstreamOnHeaders()
     }
 
-    const resHeadersLowercase = makeHeaderNamesLowercase(resHeaders)
-
-    const cacheControlHeader = resHeadersLowercase['cache-control']
-    const heuristicallyCacheable = resHeadersLowercase['last-modified'] && HEURISTICALLY_CACHEABLE_STATUS_CODES.includes(statusCode)
+    const cacheControlHeader = resHeaders['cache-control']
+    const heuristicallyCacheable = resHeaders['last-modified'] && HEURISTICALLY_CACHEABLE_STATUS_CODES.includes(statusCode)
     if (
       !cacheControlHeader &&
-      !resHeadersLowercase.expires &&
+      !resHeaders.expires &&
       !heuristicallyCacheable &&
       !this.#cacheByDefault
     ) {
@@ -128,23 +126,23 @@ class CacheHandler {
     }
 
     const cacheControlDirectives = cacheControlHeader ? parseCacheControlHeader(cacheControlHeader) : {}
-    if (!canCacheResponse(this.#cacheType, statusCode, resHeadersLowercase, cacheControlDirectives)) {
+    if (!canCacheResponse(this.#cacheType, statusCode, resHeaders, cacheControlDirectives)) {
       return downstreamOnHeaders()
     }
 
     const now = Date.now()
-    const resAge = resHeadersLowercase.age ? getAge(resHeadersLowercase.age) : undefined
+    const resAge = resHeaders.age ? getAge(resHeaders.age) : undefined
     if (resAge && resAge >= MAX_RESPONSE_AGE) {
       // Response considered stale
       return downstreamOnHeaders()
     }
 
-    const resDate = typeof resHeadersLowercase.date === 'string'
-      ? parseHttpDate(resHeadersLowercase.date)
+    const resDate = typeof resHeaders.date === 'string'
+      ? parseHttpDate(resHeaders.date)
       : undefined
 
     const staleAt =
-      determineStaleAt(this.#cacheType, now, resAge, resHeadersLowercase, resDate, cacheControlDirectives) ??
+      determineStaleAt(this.#cacheType, now, resAge, resHeaders, resDate, cacheControlDirectives) ??
       this.#cacheByDefault
     if (staleAt === undefined || (resAge && resAge > staleAt)) {
       return downstreamOnHeaders()
@@ -158,8 +156,8 @@ class CacheHandler {
     }
 
     let varyDirectives
-    if (this.#cacheKey.headers && resHeadersLowercase.vary) {
-      varyDirectives = parseVaryHeader(resHeadersLowercase.vary, this.#cacheKey.headers)
+    if (this.#cacheKey.headers && resHeaders.vary) {
+      varyDirectives = parseVaryHeader(resHeaders.vary, this.#cacheKey.headers)
 
       if (!varyDirectives) {
         // Parse error
@@ -168,7 +166,7 @@ class CacheHandler {
     }
 
     const deleteAt = determineDeleteAt(baseTime, cacheControlDirectives, absoluteStaleAt)
-    const strippedHeaders = stripNecessaryHeaders(resHeadersLowercase, cacheControlDirectives)
+    const strippedHeaders = stripNecessaryHeaders(resHeaders, cacheControlDirectives)
 
     /**
      * @type {import('../../types/cache-interceptor.d.ts').default.CacheValue}
@@ -184,8 +182,8 @@ class CacheHandler {
       deleteAt
     }
 
-    if (typeof resHeadersLowercase.etag === 'string' && isEtagUsable(resHeadersLowercase.etag)) {
-      value.etag = resHeadersLowercase.etag
+    if (typeof resHeaders.etag === 'string' && isEtagUsable(resHeaders.etag)) {
+      value.etag = resHeaders.etag
     }
 
     this.#writeStream = this.#store.createWriteStream(this.#cacheKey, value)
diff --git a/lib/interceptor/cache.js b/lib/interceptor/cache.js
index 6d1225680e7..84ae3646cbc 100644
--- a/lib/interceptor/cache.js
+++ b/lib/interceptor/cache.js
@@ -318,7 +318,7 @@ module.exports = (opts = {}) => {
         // Not a method we want to cache or we don't have the origin, skip
         return dispatch(opts, handler)
       }
-
+console.log('reqHeaders=', opts.headers)
       const reqCacheControl = opts.headers?.['cache-control']
         ? parseCacheControlHeader(opts.headers['cache-control'])
         : undefined
diff --git a/tmp.mjs b/tmp.mjs
new file mode 100644
index 00000000000..534c8035a17
--- /dev/null
+++ b/tmp.mjs
@@ -0,0 +1,5 @@
+import { Client, interceptors }  from './index.js'
+
+const client = new Client('https://google.com').compose(interceptors.cache())
+
+await client.request({ path: '/', method: 'GET', origin: 'google.com' })