diff --git a/src/core/public/integrations/moment/moment_service.test.ts b/src/core/public/integrations/moment/moment_service.test.ts
index 0884a59afba9ca..4423109b8e438a 100644
--- a/src/core/public/integrations/moment/moment_service.test.ts
+++ b/src/core/public/integrations/moment/moment_service.test.ts
@@ -47,7 +47,7 @@ describe('MomentService', () => {
     expect(momentMock.updateLocale).toHaveBeenCalledWith('default-locale', { week: { dow: 0 } });
   });
 
-  it('uses the default timezone when a zone is not defined', async () => {
+  it('does not set unknkown zone', async () => {
     const tz$ = new BehaviorSubject('timezone/undefined');
     const dow$ = new BehaviorSubject('dow1');