diff --git a/components/layout/__tests__/sidebar-vacation-banner.test.tsx b/components/layout/__tests__/sidebar-vacation-banner.test.tsx
new file mode 100644
index 000000000..1d2c8ff25
--- /dev/null
+++ b/components/layout/__tests__/sidebar-vacation-banner.test.tsx
@@ -0,0 +1,37 @@
+import React from 'react';
+import { fireEvent, render, screen } from '@testing-library/react';
+import { describe, it, expect, vi } from 'vitest';
+
+// "Vacation responder is active" opens Settings > Out of Office, not
+// whichever settings page was open last.
+
+const nav = vi.hoisted(() => ({ push: vi.fn() }));
+vi.mock('@/i18n/navigation', () => ({
+  useRouter: () => ({ push: nav.push, back: vi.fn(), replace: vi.fn() }),
+  usePathname: () => '/',
+  Link: ({ children }: { children: React.ReactNode }) => children,
+}));
+vi.mock('@/components/plugins/plugin-slot', () => ({ PluginSlot: () => null }));
+vi.mock('@/components/tour/tour-provider', () => ({
+  useTour: () => ({ startTour: vi.fn(), resetTourCompletion: vi.fn(), activeTour: null, endTour: vi.fn(), registerStep: vi.fn() }),
+}));
+vi.mock('@/contexts/drag-drop-context', () => ({ useDragDropContext: () => ({ isDragging: false }) }));
+vi.mock('@/hooks/use-mailbox-drop', () => ({
+  useMailboxDrop: () => ({ dropHandlers: {}, isValidDropTarget: false, isInvalidDropTarget: false }),
+}));
+vi.mock('@/hooks/use-tag-drop', () => ({ useTagDrop: () => ({ dropHandlers: {}, isValidDropTarget: false }) }));
+vi.mock('../account-switcher', () => ({ AccountSwitcher: () => null }));
+
+const { Sidebar } = await import('../sidebar');
+const { useVacationStore } = await import('@/stores/vacation-store');
+const { buildSettingsPath } = await import('@/lib/deep-links');
+
+describe('vacation banner', () => {
+  it('opens the Out of Office settings', () => {
+    useVacationStore.setState({ isEnabled: true, isSupported: true } as never);
+    render(<Sidebar mailboxes={[]} />);
+    fireEvent.click(screen.getByRole('button', { name: /vacation_active/ }));
+    expect(nav.push).toHaveBeenCalledWith(buildSettingsPath('vacation'));
+    expect(buildSettingsPath('vacation')).not.toBe('/settings');
+  });
+});
diff --git a/components/layout/sidebar.tsx b/components/layout/sidebar.tsx
index d9019376e..2ae285a74 100644
--- a/components/layout/sidebar.tsx
+++ b/components/layout/sidebar.tsx
@@ -894,7 +894,7 @@ function VacationBanner() {
 
   return (
     <button
-      onClick={() => router.push('/settings')}
+      onClick={() => router.push(buildSettingsPath('vacation'))}
       className={cn(
         "flex items-center gap-2 w-full px-3 py-2 text-xs",
         "bg-amber-500/10 dark:bg-amber-400/10 text-amber-700 dark:text-amber-400",