A header frame of an agricultural harvester capable of adjusting the position of attachment of a toolbar to a main frame including a main frame, first and second sides attached to respective lateral ends of the main frame, a toolbar, a brace and an adjustable bracketing assembly. The toolbar extends in a widthwise direction of the main frame. The brace includes a first end attached to the main frame and extends in a direction towards the toolbar. The adjustable bracketing assembly connects the brace to the toolbar and includes a bracket for connecting to the toolbar, and a mount attached to the brace. The bracket is attachable to the mount about a plurality of positions.
