diff --git a/application/controllers/Backend.php b/application/controllers/Backend.php
index f6c4e589..8eb7867a 100755
--- a/application/controllers/Backend.php
+++ b/application/controllers/Backend.php
@@ -99,7 +99,6 @@ class Backend extends CI_Controller {
         $view['base_url'] = $this->config->item('base_url');
         $view['user_display_name'] = $this->user_model->get_user_display_name($this->session->userdata('user_id'));
         $view['active_menu'] = PRIV_APPOINTMENTS;
-        $view['book_advance_timeout'] = $this->settings_model->get_setting('book_advance_timeout');
         $view['date_format'] = $this->settings_model->get_setting('date_format');
         $view['time_format'] = $this->settings_model->get_setting('time_format');
         $view['first_weekday'] = $this->settings_model->get_setting('first_weekday');
diff --git a/application/views/backend/calendar.php b/application/views/backend/calendar.php
index b8f0a7e1..d6622937 100755
--- a/application/views/backend/calendar.php
+++ b/application/views/backend/calendar.php
@@ -17,7 +17,6 @@
         'availableProviders'    : <?= json_encode($available_providers) ?>,
         'availableServices'     : <?= json_encode($available_services) ?>,
         'baseUrl'               : <?= json_encode($base_url) ?>,
-        'bookAdvanceTimeout'    : <?= $book_advance_timeout ?>,
         'dateFormat'            : <?= json_encode($date_format) ?>,
         'timeFormat'            : <?= json_encode($time_format) ?>,
         'firstWeekday'          : <?= json_encode($first_weekday) ?>,
diff --git a/assets/js/backend_calendar_appointments_modal.js b/assets/js/backend_calendar_appointments_modal.js
index 7eb0db61..ce95c325 100755
--- a/assets/js/backend_calendar_appointments_modal.js
+++ b/assets/js/backend_calendar_appointments_modal.js
@@ -390,8 +390,8 @@ window.BackendCalendarAppointmentsModal = window.BackendCalendarAppointmentsModa
 
         var duration = service ? service.duration : 0;
 
-        var startDatetime = new Date().addMinutes(GlobalVariables.bookAdvanceTimeout);
-        var endDatetime = new Date().addMinutes(GlobalVariables.bookAdvanceTimeout).addMinutes(duration);
+        var startDatetime = new Date();
+        var endDatetime = new Date().addMinutes(duration);
         var dateFormat;
 
         switch (GlobalVariables.dateFormat) {