It's got white stars, it has the seven pointed "Commonwealth star", and astronomically, it's more correct as it includes Epsilon Crucis.

Our flag has red stars, no bonus commonwealth star, and for some reason, whoever designed our flag decided that ε Cru could go fuck itself.

And I love him to bits for insisting that in the future, Australia would surely have a) become a republic and b) embraced the Aborigine first peoples. It's a remarkably hopeful vision of the future for a movie where he ends up running around without eyes saying creepy shit.