 On 12 October 2018, the first same-sex marriage was performed and registered in Vienna involving a lesbian couple (one of five plaintiff couples that challenged the same-sex marriage ban in court).Unlike other couples (who had to wait until 1 January 2019), the Constitutional Court allowed the plaintiff couples to marry immediately after their ruling to legalize same-sex marriage.Days after the judgement of the Constitutional Court regarding same-sex marriage came into effect, the Ministry of the Interior told registries in the country not to allow such marriages if one of the spouses comes from a country that has not legalised same-sex marriage.