diff --git a/apps/extension/src/tools/__tests__/navigation-recovery.test.ts b/apps/extension/src/tools/__tests__/navigation-recovery.test.ts
index 3d9602b..fbc463e 100644
--- a/apps/extension/src/tools/__tests__/navigation-recovery.test.ts
+++ b/apps/extension/src/tools/__tests__/navigation-recovery.test.ts
@@ -24,7 +24,7 @@ async function fixture() {
     agentWindow: {
       create: vi.fn(async () => 100),
       remove: vi.fn(async () => {}),
-      ensureActiveTab: vi.fn(async () => {}),
+      ensureActiveTab: vi.fn(async () => 4),
     },
   });
   await manager.start("test");