Watchdog for 168p pro mini not working, Infinite Reset LOOP?

Please help
Hi, my project is simple, activate one output 2 minutes per hour.

My problem is, when the Arduino reach the 2 seconds it freezes and it does not reset itself, even i can't reset manually, i have to turn it off and it will work again.

#include <avr/wdt.h> //watchdog

int segun =0;
int minut =0;
byte venti = 3;   
byte led = 13;   

void setup() {
wdt_enable(WDTO_2S); //watchdog timer with 2 Seconds time out
pinMode(venti, OUTPUT);

void loop() {
if(segun >= 60){minut++;segun = 0;}
if(minut >= 60){minut = 0;}
if(minut <= 1 ){ // 1 es 2 de 60 minutos ON
digitalWrite(venti, HIGH);digitalWrite(led, HIGH);}
else{ digitalWrite(venti, LOW);digitalWrite(led, LOW);}
delay(997); // deberia ser 1 segundo aproximadamente

i put this to test the whatchdog but it fails:

//to test whatchdog:

I found this by DrAzzy in an old post :

Yeah, this is well known.

The pro mini bootloader is kinda crap. I would recommend bootloading it with the version of optiboot that comes with MiniCore - GitHub - MCUdude/MiniCore: Arduino hardware package for ATmega8, ATmega48, ATmega88, ATmega168, ATmega328 and ATmega328PB Gives you more space, uploads faster, and fixes the watchdog bug.

Thanks man!!!

i have to do this way?

How To - Burn a custom bootloader to your Arduino:
YouTube video