One shot timer for At89C51

I want to make one short timer in AT89C51 i.e timer should stop soon after it completes.
I have to use interrupt for overflow.

There is no specific bit for making one short timer in AT89C51, so what I did in ISR is

void timr_isr()
{
    TR0 = 0;  /* turn off timer */
    /* do something on completion of timer */

}

Only problem is when I turn off timer in ISR, TL0 increases to sone value.

Is this is correct way of doing?
Or there is other method for stopping timer