diff --git a/assets/js/backend_calendar_working_plan_exceptions_modal.js b/assets/js/backend_calendar_working_plan_exceptions_modal.js
index 85876691..4c724d32 100644
--- a/assets/js/backend_calendar_working_plan_exceptions_modal.js
+++ b/assets/js/backend_calendar_working_plan_exceptions_modal.js
@@ -90,7 +90,7 @@ window.BackendCalendarWorkingPlanExceptionsModal = window.BackendCalendarWorking
                 }
 
                 var selectedDate = date.toString('yyyy-MM-dd');
-                var workingPlanExceptions = jQuery.parseJSON(provider.settings.working_plan_exceptions);
+                var workingPlanExceptions = JSON.parse(provider.settings.working_plan_exceptions);
 
                 workingPlanExceptions[selectedDate] = {
                     start: start.toString('HH:mm'),