Central locking confirmation beep

[Umbarlos007]

Hi guys . I have a 1.4 polo vivo clp 2012 . I bought the car a few months ago and recently noticed something which is new to me and kind of bothers me .

When I bought the car and I lock it it would lock and immediately make the beep sound . now however after locking the car the doors lock but the beep only comes after about 3-5 seconds . is this normal or am I right in being worried .