On June 11, I.O.I performed lively stage on "Immortal Song 2" but prior to that, viewers especially fans are surprised upon the introduction of the group when a wrong group photo of I.O.I flashed on their screen.

In the photo, 11 members of "Produce 101" are displayed showing some of the eliminated members instead of  Im Nayoung, Kim Doyeon, Jung Chaeyeon, and Joo Kyul Kyung with the caption "I.O.I Members", In regard to this, 'Immortal Song" PD Lee Tae Heon issues an apology today through a phone call with Sports Chosun and expresses that it was an obvious mistake of a staff. The staff used a fanmade photo while looking for something to use for the video clip but didn't verify the members on it. Tae Heon PD apologizes to the fans and I.O.I members and assures that they will only release the corrected videos on rebroadcast and released videos later on.

Lastly, Tae Heon PD thanks I.O.I for the great stage despite the error on their part. Meanwhile, I.O.I brightened up "Immortal Song 2" stage with their lively retro performance of Hong Seo Bum's "Fireworks"