For this particular episode, Park Myung Soo had visited a wig shop run by his younger brother, and people raised the suspicion that Park Myung Soo had purposely visited his brother's business in order to help promote it on 'Infinity Challenge.' 

When the suspicion grew into controversy, Park Myung Soo even apologized on his Instagram, writing, "This is Park Myung Soo. First, I want to offer a deep apology for causing everyone concern. We take special care to bring genuine laughter for each and every episode, so I feel very apologetic that I was the cause of discomfort to the viewers. I didn't know where to begin [with my apology] so I also regret that I didn't apologize sooner."

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The production team issued an apology as well, stating, "Because we had to procure a filming location quickly, we turned to Park Myung Soo's brother's business for help and got the permission to film there. We didn't have any intention to promote the wig shop, and didn't believe that there would be any sort of publicity arising from the broadcast content. As we were more focused on content, we failed to be more mindful of the filming locations, for which we sincerely apologize."