diff --git a/modules/zone/front/calendar/index.spec.js b/modules/zone/front/calendar/index.spec.js
index 6ea524020..0b5adc10d 100644
--- a/modules/zone/front/calendar/index.spec.js
+++ b/modules/zone/front/calendar/index.spec.js
@@ -33,6 +33,7 @@ describe('component vnZoneCalendar', () => {
     describe('step()', () => {
         it('should set the date month to 4 months backwards', () => {
             const now = new Date();
+            now.setDate(15);
             now.setMonth(now.getMonth() - 4);
 
             controller.step(-1);