diff --git a/test/fixtures/permission/fs-write.js b/test/fixtures/permission/fs-write.js
index c2db94a545d364..40482c4bd375c3 100644
--- a/test/fixtures/permission/fs-write.js
+++ b/test/fixtures/permission/fs-write.js
@@ -11,7 +11,7 @@ const regularFolder = process.env.ALLOWEDFOLDER;
 const regularFile = process.env.ALLOWEDFILE;
 const blockedFolder = process.env.BLOCKEDFOLDER;
 const blockedFile = process.env.BLOCKEDFILE;
-const blockedFileURL = new URL('file://' + process.env.BLOCKEDFILE);
+const blockedFileURL = require('url').pathToFileURL(process.env.BLOCKEDFILE);
 const relativeProtectedFile = process.env.RELATIVEBLOCKEDFILE;
 const relativeProtectedFolder = process.env.RELATIVEBLOCKEDFOLDER;
 const absoluteProtectedFile = path.resolve(relativeProtectedFile);