Disappointed Canberra was overlooked for the competition's 12th spot but McKinna hasn't given up on the ACT one day hosting A-League football.

But the national capital's continued support for Australia's World Cup bid has now been put in doubt by the decision while there has also been talk of fans boycotting the Mariners versus Adelaide United clash.

Canberra bid leader Ivan Slavich hopes supporters will turn out for the match as a poor attendance will simply convince Football Federation Australia officials that they made the righ decision.

And McKinna also hopes Canberra's football fans don't turn their backs on his team or A-League football as a whole.

"We have enjoyed our many visits to Canberra, for pre-season preparations and games as well as A-League football," McKinna told au.fourfourtwo.com. "Hopefully the fans will come out for the game and enjoy it.

"I'm sure the FFA will be watching and I don't believe the Canberra (A-League bid) is over is it? We're all looking forward to the game down there.

"We've an excellent record in Canberra and we want that to continue."

McKinna's men saw off Perth Glory 2-1 at the same venue earlier in the season. This Sunday's A-League clash will be preceded by the W-League meeting between the Mariners and Canberra United (kick off 4.15pm).