diff --git a/tests/unit/ps1-encoding.test.mjs b/tests/unit/ps1-encoding.test.mjs
index efe217d..35ffb21 100644
--- a/tests/unit/ps1-encoding.test.mjs
+++ b/tests/unit/ps1-encoding.test.mjs
@@ -21,8 +21,9 @@ import { test } from 'node:test';
 import assert from 'node:assert/strict';
 import { readFileSync, readdirSync } from 'node:fs';
 import { join } from 'node:path';
+import { fileURLToPath } from 'node:url';
 
-const ROOT = new URL('../../', import.meta.url).pathname;
+const ROOT = fileURLToPath(new URL('../../', import.meta.url));
 const PS_DIR = join(ROOT, 'scripts');
 
 /** 收集仓库里所有需要分发的 .ps1（含子目录） */