diff --git a/rail_cmd.c b/rail_cmd.c
--- a/rail_cmd.c
+++ b/rail_cmd.c
@@ -2167,7 +2167,7 @@ static void ChangeTileOwner_Track(TileIn
 {
 	if (!IsTileOwner(tile, old_player)) return;
 
-	if (new_player != 255) {
+	if (new_player != OWNER_SPECTATOR) {
 		SetTileOwner(tile, new_player);
 	}	else {
 		DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);