A header frame (10) of an agricultural harvester capable of adjusting the position of attachment of a toolbar (20) to a main frame (12) is provided. The header frame (10) includes a main frame (12), first and second sides (16, 18) attached to respective lateral ends of the main frame (12), a toolbar (20), a brace (22) and an adjustable bracketing assembly (24). The toolbar (20) extends in a widthwise direction of the main frame (12). The brace (22) includes a first end attached to the main frame (12) and extends in a direction towards the toolbar (20). The adjustable bracketing assembly (24) connects the brace (22) to the toolbar (20) and includes a bracket (26) for connecting to the toolbar (20), and a mount (28) attached to the brace (22). The bracket (26) is attachable to the mount (28) about a plurality of positions.
