diff --git a/frontend-modern/src/components/Workloads/__tests__/GuestPhysicalDisks.test.tsx b/frontend-modern/src/components/Workloads/__tests__/GuestPhysicalDisks.test.tsx
index b29495882f..961f6e2b4b 100644
--- a/frontend-modern/src/components/Workloads/__tests__/GuestPhysicalDisks.test.tsx
+++ b/frontend-modern/src/components/Workloads/__tests__/GuestPhysicalDisks.test.tsx
@@ -1,5 +1,5 @@
 import { cleanup, fireEvent, render, screen, waitFor, within } from '@solidjs/testing-library';
-import { createSignal } from 'solid-js';
+import { createSignal, type JSX } from 'solid-js';
 import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from 'vitest';
 import { AlertsAPI } from '@/api/alerts';
 import { useAlertsActivation } from '@/stores/alertsActivation';
@@ -17,6 +17,14 @@ const queryState = vi.hoisted(() => ({
   enabled: false,
 }));
 
+// The expanded disk detail now shows its history charts in view; the chart
+// measures itself with ResizeObserver, which jsdom lacks. Its rendering is
+// covered by the HistoryChart and DiskDetail suites.
+vi.mock('@/components/shared/HistoryChart', () => ({
+  HistoryChartHoverGroup: (props: { children: JSX.Element }) => <div>{props.children}</div>,
+  HistoryChart: (props: { label: string }) => <div data-testid="history-chart">{props.label}</div>,
+}));
+
 vi.mock('@/hooks/useUnifiedResources', () => ({
   useUnifiedResources: (options: { query: string; enabled: () => boolean }) => {
     queryState.query = options.query;