diff --git a/extensions/browser/index.test.ts b/extensions/browser/index.test.ts
index dbe1f3ea7f55..a60a1bb3409b 100644
--- a/extensions/browser/index.test.ts
+++ b/extensions/browser/index.test.ts
@@ -344,6 +344,7 @@ describe("browser plugin", () => {
           name: "browser",
           description: "Manage OpenClaw's dedicated browser (Chrome/Chromium)",
           hasSubcommands: true,
+          machineOutput: expect.any(Function),
         },
       ],
     });