Nigerian girls have the right to wear the hijab headscarf to school, an appeals court has ruled in a country where suicide bombers have abused Islamic dress to hide their deadly weapons.

The ruling by the Lagos division of Nigeria’s Court of Appeal ‘has restored hope in the judiciary as the last hope of the common man,’ said the director of the Muslim Rights Concern group, Ishaq Akintola.

The unanimous decision, overturning a 2013 ruling which banned hijabs in Lagos government schools, has added authority since three of the five judges are not Muslim, Akintola said.

The headscarf issue has ignited passions in a country suffering from Boko Haram’s Islamic uprising in the northeast. Some suicide bombers, including men disguised as women wearing full hijab, have hidden explosives under their robes.

Africa’s most populous nation of about 170 million people is almost equally divided between a mainly Muslim north and a predominantly Christian south.

Thursday’s ruling came in response to an appeal against a Lagos state ban, which had argued that hijabs are not part of the approved school uniform.

The hijab controversy has been most heated in the mainly Christian, southwestern Osun state. The High Court there ruled last month that any harassment of girls wearing the hijab constituted an infringement of their rights.

The local branch of the Christian Association of Nigeria had accused Osun state Gov. Rauf Aregbesola, a Muslim, of supporting the hijab as part of an ‘Islamization’ agenda. Earlier this year, it ordered Christian students to wear choir robes to school, but only a handful of students complied.

Secretary-General Ishaq Oloyede of the Supreme Council for Islamic Affairs in Nigeria has suggested the controversy is a campaign by Christian extremists to force Muslim girls into an unacceptable choice between schooling and Islam.