use LocationGroupCategory.title_plural in details
@@ -152,7 +152,7 @@ class SpecificLocation(Location, models.Model):
for category, groups in sorted(groupcategories.items(), key=lambda item: item[0].priority):
result['display'].insert(3, (
- category.title,
+ category.title if category.single else category.title_plural,
tuple({
'id': group.pk,
'slug': group.get_slug(),
