That can be enough, if it is a little used category, like Games or Offbeat. Skills, Money and Stores have a lot of competition, and are a lot harder to get on the map.
Of course anything I say is just a wild guess, because you have not given us any useful details, like list ranking, category, hours open, time of day it was open or if it has been recently moved.....all of which can influence whether or not it shows on the map filter.