Abstract: A secondary locking system for the drop side of a crib comprises an elongated three sided channel bracket having first and second parallel sides with a third side perpendicular to said first and second sides, said third side having a mounting slot by which said bracket can be mounted to a crib leg so that the drop side can be raised and lowered within the bracket. The first and second sides have at least a pair of horizontally aligned opposed holes, and a slidable locking pin adapted to be removably passed through said opposed holes, whereby when the locking pin is passed through said opposed holes the locking pin prevents the raising or lowering of the drop side, and when the locking pin is removed from said opposed holes, the drop side can be raised and lowered.