Caitlyn Jenner on Tuesday apologized for controversial comments she made in a recent interview with TIME.

“I think it's much easier for a trans woman or a trans man who authentically kind of looks and plays the role,” the I Am Cait star said in a TIME profile. “So what I call my presentation, I try to take that seriously. I think it puts people at ease. If you look like a man in a dress, it makes people uncomfortable.”

Jenner was heavily criticized on social media for the comment, with some claiming that she was projecting her own internalized transphobia.

In an open letter published on her website, Jenner apologized.

“My first reaction was to feel hurt, to wish people would give me more credit for having a big heart, and to know I don't have a mean bone in my body,” Jenner wrote in Still So Much To Learn. “But as I've thought about it, I guess I've come to understand that maybe I have made some mistakes, and I need to make my real feelings more clear.”

“What I was trying to say is that our world really is still a binary one, and that people who look 'visibly transgender' sometimes can struggle for acceptance and may be treated poorly by others. And while this may be true, it's also something that needs to change.”

Earlier this year, Jenner was criticized for her conservative views on marriage equality.

(Related: Ellen DeGeneres: Caitlyn Jenner “still has a judgment about gay marriage.”)

She promised to “try to be more articulate in the future.”