Kanye West went on Twitter yesterday to rant against smartphone apps that allow kids to make in-game purchases.

“F–k any game company that puts in-app purchases on kids games!!!” wrote Kanye on Twitter.

But he forgot one important thing: his wife, Kim Kardashian, has her own game that allows its own in-app purchases. “Kim Kardashian: Hollywood” offers a bevy of in-app purchases for up to $40.

Last year, Ayelet Waldman, the bestselling author of Bad Mother and wife of novelist Michael Chabon, complained on Twitter that Kardashian’s app “tricked” her 11-year-old son into spending $120 on Kardashian’s in-app store.

Kim defended the game’s app-purchase feature in a television interview, telling Today’s Matt Lauer, “I think you just have to be responsible, and don’t have your credit card linked to where your kid can just spend if they want to, or ask permission.”

It’s advice Kanye may want to take.

Read Next: How to Keep the Kids From Giving the Kardashians Your Kash

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