The present invention relates to a method in a network node for handling neighbor cell relations in a cellular communications network, the network node serving user equipments in a first cell, wherein the network node, upon reception of an indication from a user equipment that a second cell is a potential handover candidate cell for said user equipment based on radio condition criteria, is configured to add said second cell to a neighbor cell relation list. The method comprises applying at least one additional criterion for determining if said second cell should be added to the neighbor cell relation list; and if said at least one additional criteria is not met, then rejecting the addition of said second cell to the neighbor cell relation list even if radio condition criteria for addition of the second cell to the neighbor cell relation list are fulfilled.