FIFA has said Welsh supporters will be permitted to display rainbow-coloured hats and flags at Friday's World Cup game against Iran, according to the Football Association of Wales (FAW).
Wales' LGBTQ+ supporters group, known as the Rainbow Wall, is being represented at the tournament in Qatar, but several fans were reportedly told to remove and discard their distinctive rainbow-coloured hats ahead of Monday's 1-1 draw with the United States.
Former Wales footballer Laura McAllister was among those told to remove her hat by what she described as "heavy-handed" security guards at the team's first World Cup game since 1958.
In a statement released on Tuesday, the FAW pledged to discuss the issue with FIFA, which has been criticised for organising the World Cup in a country which criminalises same-sex relationships.
The FAW now says it has received assurances a repeat will not occur when Rob Page's team face Iran at the Ahmed bin Ali Stadium.
An FAW statement read: "In response to the FAW, FIFA has confirmed that fans with Rainbow Wall bucket hats and rainbow flags will be allowed entry to the stadium for Cymru's match against Iran on Friday.
"All World Cup venues have been contacted and instructed to follow the agreed rules and regulations."
Wales were among several European teams to back down from wearing the OneLove armband – intended to promote an anti-discriminatory message – ahead of their opening World Cup fixtures.
FIFA's reported threat to apply major sporting sanctions to teams wearing the armband has provoked a furious response from European football associations, with the president of the Danish Football Union (DBU) suggesting a blanket withdrawal from the organisation on Wednesday.