An American man has made fun of an Australian tourism ad by claiming the image of two Aboriginal men sitting at Uluru would not entice visitors down under. 

David Bronstein, a comedian who proclaims himself as a 'king' of late-night TV in North America, saw the ad while out for a walk in Toronto, Canada. 

The 'Don't Go Small Go Australia' ad, which features two Aboriginal men sitting by a campfire with Uluru in the background, was placed out the front of Goway Travel - a privately owned North American travel company.