A drive device for a movable furniture part includes a force-actuated ejection element for ejecting the movable furniture part from a closed position into an open position, and a locking device for locking the ejection element in a locking position. The locking device includes a control element connected to the ejection element, and a gate for the control element. The gate has—outside an optionally present latch depression—sidewall regions that have different hardnesses in certain sections.