diff --git a/src/bundle/Resources/public/js/scripts/admin.picker.js b/src/bundle/Resources/public/js/scripts/admin.picker.js
index 04ecbfbda6..4bfe2ba340 100644
--- a/src/bundle/Resources/public/js/scripts/admin.picker.js
+++ b/src/bundle/Resources/public/js/scripts/admin.picker.js
@@ -3,7 +3,7 @@
     const SELECTOR_PICKER_INPUT = '.ibexa-date-time-picker__input';
     const SELECTOR_FORM_INPUT = '.ibexa-picker__form-input';
     const pickers = doc.querySelectorAll(SELECTOR_PICKER);
-    const { formatShortDateTime, convertDateToTimezone, guessUserTimezone } = ibexa.helpers.timezone;
+    const { formatShortDateTime, convertDateToTimezone, browserTimezone } = ibexa.helpers.timezone;
     const userTimezone = ibexa.adminUiConfig.timezone;
     const pickerConfig = {
         enableTime: true,
@@ -26,7 +26,7 @@
         if (formInput.value) {
             const date = new Date(formInput.value * 1000);
             const dateWithUserTimezone = convertDateToTimezone(date, userTimezone);
-            const localTimezone = guessUserTimezone();
+            const localTimezone = browserTimezone();
             const convertedDate = convertDateToTimezone(dateWithUserTimezone, localTimezone, true).format();
 
             defaultDate = convertedDate;
diff --git a/src/bundle/Resources/public/js/scripts/helpers/timezone.helper.js b/src/bundle/Resources/public/js/scripts/helpers/timezone.helper.js
index eda3bf6602..5d03cce2cd 100644
--- a/src/bundle/Resources/public/js/scripts/helpers/timezone.helper.js
+++ b/src/bundle/Resources/public/js/scripts/helpers/timezone.helper.js
@@ -19,7 +19,7 @@
     const formatShortDateTime = (date, timezone = userPreferredTimezone, format = userPreferredShortDateTimeFormat) => {
         return formatDate(date, timezone, format);
     };
-    const guessUserTimezone = () => {
+    const browserTimezone = () => {
         return Intl.DateTimeFormat().resolvedOptions().timeZone;
     };
 
@@ -27,6 +27,6 @@
         convertDateToTimezone,
         formatFullDateTime,
         formatShortDateTime,
-        guessUserTimezone,
+        browserTimezone,
     });
 })(window, window.document, window.ibexa, window.moment);