diff --git a/packages/vitest/src/integrations/env/jsdom.ts b/packages/vitest/src/integrations/env/jsdom.ts
index c585ea4237a9..dcf3dbe9253d 100644
--- a/packages/vitest/src/integrations/env/jsdom.ts
+++ b/packages/vitest/src/integrations/env/jsdom.ts
@@ -232,7 +232,7 @@ export default <Environment>{
 }
 
 function createCompatRequest(utils: CompatUtils) {
-  return class Request extends NodeRequest_ {
+  class Request extends NodeRequest_ {
     constructor(...args: [input: RequestInfo, init?: RequestInit]) {
       const [input, init] = args
       if (init?.body != null) {
@@ -254,10 +254,11 @@ function createCompatRequest(utils: CompatUtils) {
       return instance instanceof NodeRequest_
     }
   }
+  return Request
 }
 
 function createJSDOMCompatURL(utils: CompatUtils): typeof URL {
-  return class URL extends NodeURL {
+  class URL extends NodeURL {
     static createObjectURL(blob: any): string {
       if (blob instanceof utils.window.Blob) {
         const compatBlob = utils.makeCompatBlob(blob)
@@ -269,7 +270,8 @@ function createJSDOMCompatURL(utils: CompatUtils): typeof URL {
     static [Symbol.hasInstance](instance: unknown): boolean {
       return instance instanceof NodeURL
     }
-  } as typeof URL
+  }
+  return URL
 }
 
 interface CompatUtils {
diff --git a/test/core/test/environments/jsdom.spec.ts b/test/core/test/environments/jsdom.spec.ts
index 5caed58f81a6..2dee767ce169 100644
--- a/test/core/test/environments/jsdom.spec.ts
+++ b/test/core/test/environments/jsdom.spec.ts
@@ -319,6 +319,11 @@ test('URL.createObjectUrl works properly', () => {
   }).not.toThrow()
 })
 
+test('compat classes preserve their .name property', () => {
+  expect(URL.name).toBe('URL')
+  expect(Request.name).toBe('Request')
+})
+
 test('jsdom global is exposed', () => {
   // @ts-expect-error -- jsdom is not exposed in our types because we use a single tsconfig for all
   const dom = jsdom