When Justin Bieber hit back at a reporter for criticizing his Coachella performance, Ariana Grande backed him up.

Earlier this week, E!’s Nightly Pop host Morgan Stewart slammed Bieber for his Coachella performance on Sunday, in which he joined Ariana on stage and was caught lip-syncing to his hit song “Sorry.”

Ariana quickly came to his defense, tweeting, “We also decided to do this ten minutes before my set started. we had 0 soundcheck, 0 rehearsal. u were singing with the back tracking like most cameos do.”

She added, “people are bored. people don’t know how it feels to be under such scrutiny. the world was happy to have u on stage again.”

After tweeting some more words of encouragement to Justin, she concluded, “i don’t like when people try to ruin beautiful moments for my friends that’s all. have a good day.” Her tweets have since been deleted.

https://people.com/music/justin-bieber-morgan-stewart-ariana-grande-lip-sync-fail/