diff --git a/packages/features/bookings/lib/handleNewBooking.ts b/packages/features/bookings/lib/handleNewBooking.ts
index c560bdb524..95aa37aa15 100644
--- a/packages/features/bookings/lib/handleNewBooking.ts
+++ b/packages/features/bookings/lib/handleNewBooking.ts
@@ -131,7 +131,9 @@ const isWithinAvailableHours = (
 
   for (const workingHour of workingHours) {
     const startTime = getTime(timeSlotStart, workingHour.startTime);
-    const endTime = getTime(timeSlotEnd, workingHour.endTime);
+    // workingHours function logic set 1439 minutes when user select the end of the day (11:59) in his schedule
+    // so, we need to add a minute, to avoid, "No available user" error when the last available slot is selected.
+    const endTime = getTime(timeSlotEnd, workingHour.endTime === 1439 ? 1440 : workingHour.endTime);
     if (
       workingHour.days.includes(timeSlotStart.day()) &&
       // UTC mode, should be performant.