Seth Rogen has ended his feud with Justin Bieber.

While appearing on The Ellen DeGeneres Show, Rogen explained that he ran into Bieber backstage during the show and the two made up.

Rogen explained that he wasn't sure what made him start the feud in the first place on Twitter. He called Bieber a variety of names on the social media platform back in 2014. At this point, the two had only ever met once before.

"It's not really a beef, I just called him some mean things on social media for no real reason. And I'd only met him very briefly. I can't tell you why I did it, I was inclined to do it at that moment, and then I did it," said Rogen. "I finally saw him today in the hallway of your show and I guess we made up, which is fantastic. It's all my fault, it's all because I decided to be mean one day for no reason whatsoever."

The two even hugged it out at the end of the segment.

Watch the full interview below: