An extension of six weeks has been made to the public consultation period over a proposed South Downs National Park.
The government said people could now make representations or register objections until 24 September.
The decision was made after the South Downs Campaign and Council for National Parks complained the original deadline fell in the summer holidays.
Boundaries for the park were recently revised and no longer include the Low Weald in West Sussex and Hampshire.
An area around Liss, Petersfield, Midhurst and Petworth has been left out of the latest proposals.