diff --git a/packages/vitest/src/integrations/env/utils.ts b/packages/vitest/src/integrations/env/utils.ts
index 230f1f2bbd55..640a2be9f2a4 100644
--- a/packages/vitest/src/integrations/env/utils.ts
+++ b/packages/vitest/src/integrations/env/utils.ts
@@ -5,6 +5,7 @@ const skipKeys = [
   'self',
   'top',
   'parent',
+  'URL',
 ]
 
 export function getWindowKeys(global: any, win: any) {