Adelaide United and Melbourne Victory will play their FFA Cup Round of 16 tie at Marden Sports Complex and not Coopers Stadium.
In fixtures released on the official FFA Cup website, Adelaide's clash with Victory has been listed at Marden - the venue where they faced Newcastle Jets in the Round of 32 on Wednesday.
However, considering the Round of 16 clash was against their biggest rivals, it was expected United would schedule the game at Hindmarsh.
Adelaide CEO Grant Mayer even asked fans on Twitter which would be their preferred venue, with Coopers Stadium the clear favourite.
But the game will go ahead at Marden - which has a capacity of around 6,000, while Coopers is 16,500 – on Wednesday, August 23.
“The FFA Cup sets out to be different experience for our fans, different venues, different opponents and very much a competition grounded in the grassroots of our game," said head of the A-League, Greg O'Rourke.
“The ability to host a game in a smaller boutique venue mid week is completely in line with our thinking at this stage of the Cup.
“We encourage all football fans in Adelaide to get to Marden and experience the difference that the FFA Cup can bring.”
Adelaide and Victory will not meet at Coopers in the A-League 2017/18 season.