elastic hook 3 is mounted within the neck 61 of the doorknob the push button 62 may be at least partially inserted into the opening or hole 2 in order to prevent the push button 62 to be pressed in an inward manner so that the door will not be accidentally locked when the door is then closed insert of the push button 62 within the opening 2 is clearly seen in fig3 thus when a user wishes to close the door it is only necessary to pull the doorknob 6 and the elastic hook 3 will be moved or displaced in an upward manner and the knob head 6 slides through the plastic hook 3 and the door is free to be closed referring now to fig4 there is shown another type of knob head 6a which is differently contoured than the knob head 6 as previously described but in relation to the improved door catch operates in the same manner it is noted that doorknobs independent of the shapes have lengths which comply with international specifications within specified limits and thus the improved door catch as provided in this invention concept is dimensioned to fit all of such differing shaped knob.