diff --git a/src/plugins/loader.test.ts b/src/plugins/loader.test.ts
index 052037d2e36..39d83e60652 100644
--- a/src/plugins/loader.test.ts
+++ b/src/plugins/loader.test.ts
@@ -216,6 +216,7 @@ function writeBundledPlugin(params: {
     filename: params.filename ?? "index.cjs",
     body: params.body ?? simplePluginBody(params.id),
   });
+  delete process.env.OPENCLAW_DISABLE_BUNDLED_PLUGINS;
   process.env.OPENCLAW_BUNDLED_PLUGINS_DIR = bundledDir;
   return { bundledDir, plugin };
 }