diff --git a/src/plugins/loader.test.ts b/src/plugins/loader.test.ts
index 39d83e60652..d2ac0a05c09 100644
--- a/src/plugins/loader.test.ts
+++ b/src/plugins/loader.test.ts
@@ -5528,7 +5528,7 @@ module.exports = { id: "throws-after-import", register() {} };`,
   });
 
   it("respects explicit disable in config", () => {
-    process.env.OPENCLAW_BUNDLED_PLUGINS_DIR = "/nonexistent/bundled/plugins";
+    useNoBundledPlugins();
     const plugin = writePlugin({
       id: "config-disable",
       body: `module.exports = { id: "config-disable", register() {} };`,