A Malaysian court ruled Wednesday that non-Muslims can use the word “Allah” to refer to God, in a major decision over a divisive issue for religious freedom in the Muslim-majority country.

Two ethnic Malay political parties immediately voiced concern and Thursday urged the government to challenge the ruling.

The High Court deemed unconstitutional a 35-year-old government ban on the usage of Allah and three other Arabic words by Christian publications, said the plaintiff’s lawyer, Annou Xavier.