diff --git a/assets/js/http/booking_http_client.js b/assets/js/http/booking_http_client.js
index 98ddb8c6..98adcf9c 100755
--- a/assets/js/http/booking_http_client.js
+++ b/assets/js/http/booking_http_client.js
@@ -22,6 +22,9 @@ App.Http.Booking = (function () {
     const $availableHours = $('#available-hours');
     const $captchaHint = $('#captcha-hint');
     const $captchaTitle = $('.captcha-title');
+    
+    const moment = window.moment;
+    
     let unavailableDatesBackup;
     let selectedDateStringBackup;
     let processingUnavailableDates = false;
@@ -280,8 +283,9 @@ App.Http.Booking = (function () {
         if (setDate && !vars('manage_mode')) {
             for (let i = 1; i <= numberOfDays; i++) {
                 const currentDate = new Date(selectedDate.getFullYear(), selectedDate.getMonth(), i);
+                
                 if (unavailableDates.indexOf(moment(currentDate).format('YYYY-MM-DD')) === -1) {
-                    $('#select-date')[0]._flatpickr.setDate( currentDate);
+                    $('#select-date')[0]._flatpickr.setDate(currentDate);
                     getAvailableHours(moment(currentDate).format('YYYY-MM-DD'));
                     break;
                 }