diff --git a/benchmarks/cacheGetFieldValues.mjs b/benchmarks/cacheGetFieldValues.mjs
index 2a5894bd2ad..a02d0987d4d 100644
--- a/benchmarks/cacheGetFieldValues.mjs
+++ b/benchmarks/cacheGetFieldValues.mjs
@@ -2,7 +2,6 @@ import { bench, group, run } from 'mitata'
 import { getFieldValues } from '../lib/cache/util.js'
 
 const values = [
-  '',
   'foo',
   'invälid',
   'foo, '
diff --git a/lib/cache/util.js b/lib/cache/util.js
index 745c5b04ce7..d168d45351b 100644
--- a/lib/cache/util.js
+++ b/lib/cache/util.js
@@ -19,8 +19,6 @@ function urlEquals (A, B, excludeFragment = false) {
   return serializedA === serializedB
 }
 
-const emptyArray = Object.freeze([])
-
 /**
  * @see https://github.com/chromium/chromium/blob/694d20d134cb553d8d89e5500b9148012b1ba299/content/browser/cache_storage/cache_storage_cache.cc#L260-L262
  * @param {string} header
@@ -28,10 +26,6 @@ const emptyArray = Object.freeze([])
 function getFieldValues (header) {
   assert(header !== null)
 
-  if (header === '') {
-    return emptyArray
-  }
-
   const values = []
 
   for (let value of header.split(',')) {
diff --git a/test/cache/get-field-values.js b/test/cache/get-field-values.js
index e9287066fbb..7a1a91d523a 100644
--- a/test/cache/get-field-values.js
+++ b/test/cache/get-field-values.js
@@ -1,6 +1,6 @@
 'use strict'
 
-const { deepStrictEqual, throws, strictEqual } = require('node:assert')
+const { deepStrictEqual, throws } = require('node:assert')
 const { test } = require('node:test')
 const { getFieldValues } = require('../../lib/cache/util')
 
@@ -10,7 +10,6 @@ test('getFieldValues', () => {
     message: 'The expression evaluated to a falsy value:\n\n  assert(header !== null)\n'
   })
   deepStrictEqual(getFieldValues(''), [])
-  strictEqual(Object.isFrozen(getFieldValues('')), true)
   deepStrictEqual(getFieldValues('foo'), ['foo'])
   deepStrictEqual(getFieldValues('invälid'), [])
   deepStrictEqual(getFieldValues('foo, bar'), ['foo', 'bar'])