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On Thursday, Drake Bell apologized for his tone-deaf tweet about Caitlyn Jenner in which he said, “Sorry….still calling you Bruce.”

Bell’s tweet—now deleted—came after Jenner’s Vanity Fair cover was revealed. Bell was immediately criticized for the comment, deemed by many as insensitive and transphobic.

Bell has now taken to Twitter to apologize for his remarks. “I sincerely apologize for my thoughtless insensitive remarks,” the actor and singer wrote. “I in no way meant to hurt or demean those going through a similar journey.”

“Although my comments were made in innocence, I deeply regret the negative effect they’ve had on so many,” Bell added.