Air France will resume flights from Paris to Tehran this month, ending a years-long suspension of service to the Iranian capital.

For the trips to Tehran, the airline had previously told female crew members to wear a headscarf when they leave the aircraft, according to Britain’s Guardian newspaper, which cited an internal staff memo. But the dress code restrictions were not particularly well received by some employees, who reportedly reached out to union representatives about it.

“Every day we have calls from worried female cabin crew who tell us that they do not want to wear the headscarf,” Christophe Pillet of the SNPNC,a national flight attendant union, told Agence France-Presse.

And so, on Monday, the airline announced that female flight attendants and pilots could turn down the Paris-Tehran route and would instead be given a crew slot on a flight bound for another destination.

“Tolerance and respect for the cultures and customs in the countries served by the airline are part of the fundamental values of Air France and its staff,” the company said in a news release.

The decision came after the company’s management met with union representatives, according to the release.

(c) 2016, The Washington Post · Sarah Larimer