Justin Bieber is pretty shocked that “CSI” star Marg Helgenberger said he was a “brat” on the set, especially since they never actually worked together.

Bieber took to his Twitter saying, “it’s kinda lame when someone you met briefly and never worked with comments on you. I will continue to wish them luck and be kind.”

Bieber continued with, “Even last week they had me scolded on a plane in the news because i wasnt in my seat fast enough. She was right and i sat down. That’s news?”

… and “I know who i am and sometimes people r just going 2 say what they want. Keep ur head up and be the man ur mama raised. #killemwithkindness”

As we previously reported, in a recent interview with the French radio show “Le Grand Direct des Mdias,” Helgenberger said the teen sensation was a bit of a pain to work with during his two-episode arc on the CBS procedural.

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“I shouldn’t be saying this, but he was kind of a brat,” she said. “He was very nice to me, but he locked one of the producers in a closet, and he put his fist through a cake that was on the actors’ table.”

What do you think … brat or not?