diff --git a/source/connector-mobilizon/front/date-time-wrapper-test.js b/source/connector-mobilizon/front/date-time-wrapper-test.js
index c29f87d..776cc5a 100644
--- a/source/connector-mobilizon/front/date-time-wrapper-test.js
+++ b/source/connector-mobilizon/front/date-time-wrapper-test.js
@@ -2,42 +2,42 @@ import test from 'ava'
 import DateTimeWrapper from './date-time-wrapper'
 
 test('#getShortDate usual date', t => {
-  const d = new DateTimeWrapper({ locale: 'en-GB', text: '2020-12-24T16:45:00Z' })
+  const d = new DateTimeWrapper({ text: '2020-12-24T16:45:00Z' })
   t.is(d.getShortDate(), '24/12/2020')
 })
 
 test('#get24Time usual time', t => {
-  const d = new DateTimeWrapper({ locale: 'en-GB', text: '2020-12-24T16:45:00Z' })
+  const d = new DateTimeWrapper({ text: '2020-12-24T16:45:00Z' })
   t.is(d.get24Time(), '16:45')
 })
 
 test('#equalsDate same date, different time', t => {
-  const d = new DateTimeWrapper({ locale: 'en-GB', text: '2020-12-24T16:45:00Z' })
-  const e = new DateTimeWrapper({ locale: 'en-GB', text: '2020-12-24T17:46:01Z' })
+  const d = new DateTimeWrapper({ text: '2020-12-24T16:45:00Z' })
+  const e = new DateTimeWrapper({ text: '2020-12-24T17:46:01Z' })
   t.true(d.equalsDate(e))
 })
 
 test('#equalsDate different date, different time', t => {
-  const d = new DateTimeWrapper({ locale: 'en-GB', text: '2020-12-24T16:45:00Z' })
-  const e = new DateTimeWrapper({ locale: 'en-GB', text: '2021-11-25T17:46:01Z' })
+  const d = new DateTimeWrapper({ text: '2020-12-24T16:45:00Z' })
+  const e = new DateTimeWrapper({ text: '2021-11-25T17:46:01Z' })
   t.false(d.equalsDate(e))
 })
 
 test('#equalsDate different day, different time', t => {
-  const d = new DateTimeWrapper({ locale: 'en-GB', text: '2020-12-24T16:45:00Z' })
-  const e = new DateTimeWrapper({ locale: 'en-GB', text: '2020-12-25T17:46:01Z' })
+  const d = new DateTimeWrapper({ text: '2020-12-24T16:45:00Z' })
+  const e = new DateTimeWrapper({ text: '2020-12-25T17:46:01Z' })
   t.false(d.equalsDate(e))
 })
 
 test('#equalsDate different month, different time', t => {
-  const d = new DateTimeWrapper({ locale: 'en-GB', text: '2020-12-24T16:45:00Z' })
-  const e = new DateTimeWrapper({ locale: 'en-GB', text: '2020-11-24T17:46:01Z' })
+  const d = new DateTimeWrapper({ text: '2020-12-24T16:45:00Z' })
+  const e = new DateTimeWrapper({ text: '2020-11-24T17:46:01Z' })
   t.false(d.equalsDate(e))
 })
 
 test('#equalsDate different year, different time', t => {
-  const d = new DateTimeWrapper({ locale: 'en-GB', text: '2020-12-24T16:45:00Z' })
-  const e = new DateTimeWrapper({ locale: 'en-GB', text: '2021-12-24T17:46:01Z' })
+  const d = new DateTimeWrapper({ text: '2020-12-24T16:45:00Z' })
+  const e = new DateTimeWrapper({ text: '2021-12-24T17:46:01Z' })
   t.false(d.equalsDate(e))
 })
 
diff --git a/source/connector-mobilizon/front/date-time-wrapper.js b/source/connector-mobilizon/front/date-time-wrapper.js
index 0294735..b16b981 100644
--- a/source/connector-mobilizon/front/date-time-wrapper.js
+++ b/source/connector-mobilizon/front/date-time-wrapper.js
@@ -2,10 +2,7 @@ import { DateTime } from 'luxon'
 
 export default class DateTimeWrapper {
 
-  constructor({ locale, text, timeZone }) {
-    if (!timeZone) {
-      timeZone = 'utc'
-    }
+  constructor({ locale = 'en-GB', text, timeZone = 'utc' } = {}) {
     this.dateTime = DateTime.fromISO(text, { locale, zone: timeZone })
   }
 
diff --git a/source/connector-mobilizon/front/events-displayer-test.js b/source/connector-mobilizon/front/events-displayer-test.js
index cac5358..fc1ff2b 100644
--- a/source/connector-mobilizon/front/events-displayer-test.js
+++ b/source/connector-mobilizon/front/events-displayer-test.js
@@ -13,6 +13,7 @@ test.beforeEach(t => {
   t.context.list = document.createElement('ul')
   t.context.list.setAttribute('data-locale', 'en-GB')
   t.context.list.setAttribute('data-maximum', '2')
+  t.context.list.setAttribute('data-time-zone', 'utc')
   const listElement = document.createElement('li')
   listElement.setAttribute('style', 'display: none;')
   t.context.list.appendChild(listElement)
diff --git a/source/connector-mobilizon/front/formatter-test.js b/source/connector-mobilizon/front/formatter-test.js
index 90da46e..72cd424 100644
--- a/source/connector-mobilizon/front/formatter-test.js
+++ b/source/connector-mobilizon/front/formatter-test.js
@@ -2,12 +2,12 @@ import test from 'ava'
 import Formatter from './formatter'
 
 test('#formatDate one date', t => {
-  const date = Formatter.formatDate({ locale: 'en-GB', start: '2021-04-15T10:30:00Z', end: '2021-04-15T15:30:00Z' })
+  const date = Formatter.formatDate({ start: '2021-04-15T10:30:00Z', end: '2021-04-15T15:30:00Z' })
   t.is(date, '15/04/2021 10:30 - 15:30')
 })
 
 test('#formatDate two dates', t => {
-  const date = Formatter.formatDate({ locale: 'en-GB', start: '2021-04-15T10:30:00Z', end: '2021-04-16T15:30:00Z' })
+  const date = Formatter.formatDate({ start: '2021-04-15T10:30:00Z', end: '2021-04-16T15:30:00Z' })
   t.is(date, '15/04/2021 10:30 - 16/04/2021 15:30')
 })