Justin Bieber bumped his head on the revolving door. Incidentally, someone was filming him when it happened.

Just as Bieber was about to go out, he crashed on Radisson hotel's revolving door. He didn't seem to have noticed that the outside door was still closed. He walked straight ahead and collided with the glass door.

When he realized that the blooper was caught on video, he laughed it off. He even approached the videographer to explain himself.

"Yo, what up, I just walked into that door," Bieber said.

"My forehead hurts. What happened was, I thought it opened, but obviously it didn't, and I walked right into the window."

In another news, Ryan Seacrest's official blog debuted a remix of Bieber's ""Somebody to Love" featuring Usher.

"Getting hyped reading all your messages about the SOMEBODY TO LOVE remix...im real excited for the video too," the 16-year-old pop sensation said on his Twitter.