Girls' Generation's Jessica addressed the recent 'headbanging' controversy, as she was seen not shaking her head like the rest of her members onstage.

All nine members of Girls' Generation made a guest appearance yesterday on MBC's "Radio Star" sharing various stories.

Hyoyeon put Jessica on the spot by asking, "In our new choreography there's a part where we all shake our head but Jessica does it half-heartedly, just pretending."

Hyoyeon might have mentioned this as Jessica's lack of participation on stage sparked an online controversy for this habit as it was spotted in "I Got a Boy" music video and various stage performances.

Jessica laughing embarrassingly as if she acknowledge this and explained, "Hyoyeon, it's because I was experiencing a headache at the time. Please don't misunderstand."

Hyoyeon concluded the discussing the topic by stating, "I think it will be cool if Jessica did the dance properly."