Ariana Grande’s all-star benefit concert for victims of last month’s attack after her show in Manchester, England, has won over a critic in Piers Morgan.

The outspoken former CNN personality and current host of ITV’s “Good Morning Britain” had criticized Grande on Twitter after the attack for returning home to the U.S. instead of visiting with victims.

Grande visited injured fans in the hospital last week before Sunday’s One Love Manchester concert. Grande was joined by Miley Cyrus, Pharrell, Katy Perry, Justin Bieber and others at the concert that raised more than $13 million for a relief fund.

Morgan tweeted during the concert that he misjudged Grande and apologized.