If you’re planning to celebrate Christmas in Brunei, you could get a five-year prison sentence and a hefty fine.

According to multiple published reports, the predominantly Islamic nation has banned public celebrations of the holiday amid fears that it could damage the faith of the Muslims who live there.

The Brunei Times published a statement from Brunei’s Ministry of Religious Affairs saying that non-Muslims are free to celebrate Christmas privately “among their community,” but they can’t disclose their celebrations or display them to Muslims. Doing so can be viewed as an illegal “propagation of religions other than Islam.”

It’s also illegal for a Muslim to imitate customs of other religions, according to the statement. A Muslim who wears a Santa hat or a Santa suit could be arrested.

British newspaper The Independent reported anyone who violates Brunei’s Christmas laws could be handed a five-year prison sentence and/or a fine of $20,000.

Brunei, on the island of Borneo, introduced the restrictions last year after Sultan Hassanal Bolkiah implemented the controversial, religiously inspired Sharia penal law system. Violating certain laws can prompt punishments like stoning, whipping and dismemberment, drawing widespread criticism.

About 430,000 people live in Brunei, according to data released by the CIA. Islam is the nation’s official religion. About 79 percent of Brunei’s residents are Muslim and 9 percent are Christian.

This month, local religious leaders have warned Muslims in Brunei not to celebrate Christmas.

According to The Borneo Bulletin, imams said “doing anything that amounts to respecting their religion” – referring to Christianity – violates Islamic beliefs. The imams cautioned against doing things like putting up holiday decorations, singing Christmas carols or even lighting candles “as it could affect our Islamic faith.”

The statement from Brunei’s Ministry of Religious Affairs said that enforcement officials visited multiple businesses last year that “publicly displayed Christmas decorations.” It did not say if anyone was punished.

The nation wasn’t alone in imposing restrictions on Christmas celebrations.

According to a report in New Vision, a Uganda newspaper, the government in Somalia banned celebrating Christmas and the New Year in the nation’s capital. Officials gave reasons similar to Brunei’s decision, saying the celebrations could damage Islamic faith – despite the fact that the country is 99 percent Muslim.

New Vision reported Somali religious officials are worried that Christmas celebrations might incite the Al-Shabaab terrorist group to perform deadly attacks.

Some people who live in countries where Christmas celebrations have been restricted are sharing photos of their Christmas trees on social media using the hashtag #MyTreedom.

A Facebook page devoted to the cause had more than 27,000 likes as of Wednesday afternoon, and was displaying images purported to be from countries like Iraq, Nigeria and Syria.