A pair of Elton John concerts at the American Airlines Center in Dallas have been postponed because the singer recently tested positive for the coronavirus, the venue said on Tuesday.

The announcement came just hours before the planned start of a performance, which was to begin at 8 p.m. on Tuesday. The second concert had been scheduled for Wednesday.

“Elton is fully vaccinated and boosted, and is experiencing only mild symptoms,” the American Airlines Center said in a brief statement on its website.

The shows are part of his “Farewell Yellow Brick Road” tour. The American Airlines Center did not give new dates for the concerts.