diff --git a/public/app/features/alerting/unified/MuteTimings.test.tsx b/public/app/features/alerting/unified/MuteTimings.test.tsx
index fc44b90a59f..b4ea92fdcb0 100644
--- a/public/app/features/alerting/unified/MuteTimings.test.tsx
+++ b/public/app/features/alerting/unified/MuteTimings.test.tsx
@@ -1,3 +1,4 @@
+import { act, fireEvent } from '@testing-library/react';
 import { InitialEntry } from 'history';
 import { last } from 'lodash';
 import { Route, Routes } from 'react-router-dom-v5-compat';
@@ -144,8 +145,11 @@ const fillOutForm = async ({
 };
 
 const saveMuteTiming = async () => {
-  const user = userEvent.setup();
-  await user.click(await screen.findByText(/save time interval/i));
+  // TODO investigate why we need act/fireEvent
+  // see https://github.com/testing-library/react-testing-library/issues/1375
+  const button = await screen.findByText(/save time interval/i);
+  // eslint-disable-next-line testing-library/no-unnecessary-act, testing-library/prefer-user-event
+  await act(() => fireEvent.click(button));
 };
 
 setupMswServer();