diff --git a/lib/internal/bootstrap/web/exposed-window-or-worker.js b/lib/internal/bootstrap/web/exposed-window-or-worker.js
index 2459bee85bb8b0..d99ace09c5472b 100644
--- a/lib/internal/bootstrap/web/exposed-window-or-worker.js
+++ b/lib/internal/bootstrap/web/exposed-window-or-worker.js
@@ -57,32 +57,19 @@ defineReplaceableLazyAttribute(globalThis, 'perf_hooks', ['performance']);
 const { installObjectURLMethods } = require('internal/url');
 installObjectURLMethods();
 
-{
-  // https://fetch.spec.whatwg.org/#fetch-method
-  function set(value) {
-    ObjectDefineProperty(globalThis, 'fetch', {
-      __proto__: null,
-      writable: true,
-      value,
-    });
-  }
-  ObjectDefineProperty(globalThis, 'fetch', {
-    __proto__: null,
-    configurable: true,
-    enumerable: true,
-    set,
-    get() {
-      function fetch(input, init = undefined) {
-        // Loading undici alone lead to promises which breaks lots of tests so we
-        // have to load it really lazily for now.
-        const { fetch: impl } = require('internal/deps/undici/undici');
-        return impl(input, init);
-      }
-      set(fetch);
-      return fetch;
-    },
-  });
-}
+// https://fetch.spec.whatwg.org/#fetch-method
+ObjectDefineProperty(globalThis, 'fetch', {
+  __proto__: null,
+  configurable: true,
+  enumerable: true,
+  writable: true,
+  value: function fetch(input, init = undefined) { // eslint-disable-line func-name-matching
+    // Loading undici alone lead to promises which breaks lots of tests so we
+    // have to load it really lazily for now.
+    const { fetch: impl } = require('internal/deps/undici/undici');
+    return impl(input, init);
+  },
+});
 
 // https://xhr.spec.whatwg.org/#interface-formdata
 // https://fetch.spec.whatwg.org/#headers-class