Let’s pray this doesn’t happen again.

There was mass confusion at a Christmas service in Sri Lanka when the program featured the words to Tupac Shakur’s 1997 song, “Hail Mary,” instead of the traditional Catholic prayer, according to multiple reports.

The service took place on December 11 in Colombo, but pictures of the program went viral during the Christmas holiday.

A Christmas Carol service in Sri Lanka has accidentally printed the lyrics of Tupac’s Hail Mary, instead of the prayer.#SriLanka #lka pic.twitter.com/djhJPAWhcj — Ravindu Thimantha G. (@IamRavindu) December 25, 2016

As the Guardian notes, both the “Hail Mary” prayer and Tupac Shakur’s rap song ask Mother Mary to intercede on behalf of sinners, but they differ greatly on the specifics.

The prayer, which is based on two passages from St. Luke’s Gospel, goes like this:

Hail Mary full of Grace, the Lord is with thee. Blessed are thou among women, and blessed is the fruit of thy womb, Jesus. Holy Mary, Mother of God, pray for us sinners, now and at the hour of our death. Amen.

Shakur’s version is more explicit, with lines like,

I ain’t a killer, but don’t push me

Revenge is like the sweetest joy next to getting pussy

Picture paragraphs unloaded, wise words being quoted

Peeped the weakness in the rap game and sewed it.

Andrew Choksy attended the service and recognized the Shakur song immediately.

“A lot of people were in shock as whether it was a joke or someone would actually rap the song,” he told Mashable. “A few of the older ladies in front of us could not stop looking at the printed booklet.”

Organizers discovered the mistake before the service began and asked for the books back, according to Father Da Silva of the Archdiocese of Colombo, which put on the event.

“The page was in the middle of the booklet,” Da Silva told CNN. “When people looked at this page, they saw it before the start of the show. Two people saw it and alerted us to it.”

Da Silva said the printer was a young boy who downloaded the wrong version.

“We are very sorry to say that this happened,” he said.