New York City FC’s success in the Concacaf Champions League has forced the club to reschedule a game from April to August.

The team has moved its April 9 MLS match against D.C. United at Citi Field to Red Bull Arena on Aug. 31. According to the club, that was the only date that worked for both teams and RBA was the only available venue.

NYCFC will meet the Seattle Sounders in the semifinals, with the first leg Luemn Field in Seattle, Wash. on April 6 at 10 p.m. ET and the home leg at RBA on April 13 at 9 p.m. ET.

“We are 100 percent focused on and determined to be the first MLS team to win this tournament and create another proud moment in our club’s history,” NYCFC CEO Brad Sims said in a statement. “We want to bring home even more silverware to our fans and represent MLS at the Club World Cup.”

The Cityzens, the reigning MLS Cup champions, will play again in the enemy’s venue in Harrison, N.J.

“We know that many of our fans have come out to support the team at Red Bull Arena in the past, and we also understand those who have not for obvious reasons,” Sims said. But Tuesday night in Guatemala reminded us all what a massive impact fans can have on the outcome of a game. Now it’s our turn to have the advantage at one of the most important matches in our club’s history.”

Despite losing to Comunicaciones FC in the second leg of the quarterfinals on Tuesday, 4-2, NYCFC advanced on the strength of the away goals rule (it had two to the Guatemalan’s side’s one) after the aggregate score ended up at 5-5.

Both legs will be broadcasted on FS2 and TUDN.