diff --git a/packages/x-date-pickers-pro/src/DateRangeCalendar/DateRangeCalendar.test.tsx b/packages/x-date-pickers-pro/src/DateRangeCalendar/DateRangeCalendar.test.tsx
index 6d2b8aea792da..5700eed004a35 100644
--- a/packages/x-date-pickers-pro/src/DateRangeCalendar/DateRangeCalendar.test.tsx
+++ b/packages/x-date-pickers-pro/src/DateRangeCalendar/DateRangeCalendar.test.tsx
@@ -23,6 +23,7 @@ import {
 import { DateRangePickerDay } from '@mui/x-date-pickers-pro/DateRangePickerDay';
 import { describeConformance } from 'test/utils/describeConformance';
 import { DateRangePosition } from './DateRangeCalendar.types';
+import { equal } from 'assert';
 
 const TIMEZONE_TO_TEST = ['UTC', 'system', 'America/New_York'];
 
@@ -600,7 +601,7 @@ describe('<DateRangeCalendar />', () => {
         expect(rerenderedButtons.length).equals(initialButtons.length);
 
         // Compare timestamps
-        expect(rerenderedTimestamps).equals(initialTimestamps);
+        expect(rerenderedTimestamps).to.deep.equal(initialTimestamps);
       });
 
       it('should select the range from the next month', () => {
diff --git a/packages/x-date-pickers/src/DateCalendar/tests/timezone.DateCalendar.test.tsx b/packages/x-date-pickers/src/DateCalendar/tests/timezone.DateCalendar.test.tsx
index 522850e2af670..5e61fa69ab12d 100644
--- a/packages/x-date-pickers/src/DateCalendar/tests/timezone.DateCalendar.test.tsx
+++ b/packages/x-date-pickers/src/DateCalendar/tests/timezone.DateCalendar.test.tsx
@@ -92,7 +92,7 @@ describe('<DateCalendar /> - Timezone', () => {
           expect(rerenderedButtons.length).equals(initialButtons.length);
 
           // Compare timestamps
-          expect(rerenderedTimestamps).equals(initialTimestamps);
+          expect(rerenderedTimestamps).to.deep.equal(initialTimestamps);
         });
 
         it('on timezone change the difference between the selected date change should be at max 1', () => {