In the last week, lyrical legend KRS-One excited fans with the latest sneak attack release, The World Is Mind. Just over 30 years after Criminal Minded, this self-released album had many praising the latest body of work from the South Bronx representative. However, as fans delved into the album (available for full, free stream), they noticed a mistake from Hip-Hop’s “Teacha.”

On the song “Hip-Hop Speaks From Heaven,” an ode to MCs who have passed away, Kris paid tribute to Beastie Boys member Ad-Rock. Adam Horovitz is very much alive, and pursuing an acting and production career. Five years ago last week, Beastie Boys member Adam “MCA” Yauch died after a battle with cancer. Both named Adam, Kris was presumably not the first to make the mistake, but he did on the album—for all to hear.

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In a statement on social media, KRS-One has now acknowledged the mistake. A mid-1980s Rap contemporary of the Beasties, Kris vows to re-record the song, and pull the erroneous version (which he apparently already has). The renowned poet, teacher, and frequent spokesman for Hip-Hop culture was not above calling himself out, despite good intentions.

In part, KRS writes, “Historical accuracy is extremely important to me, so I accept all responsibility for this error. Those that know me are aware as to how fast I record in the studio and how immediately my material is released after that.” He adds that many of his recordings are based off of freestyle, off-the-head verses in the lab. “No excuse though, I am on top of this and again, my sincerest condolences to King Ad-Rock who is alive and well.”

Less than two years ago, KRS-One ruffled feathers when he dissed another 1980s Def Jam Records seminal act. After a fan jumped on stage, Kris deemed the shower-goer “wack,” and compared him to LL Cool J during a concert freestyle. Video of the performance circulated across the web. Later, KRS apologized in a detailed freestyle, praising his Queens contemporary.

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While KRS did not collaborate with the Beastie Boys, they each have histories with Nas, Biz Markie, and D.M.C.