diff --git a/tree_monster.lua b/tree_monster.lua
index 239cf27..f9e6e2c 100644
--- a/tree_monster.lua
+++ b/tree_monster.lua
@@ -40,6 +40,11 @@ mobs:register_mob("mobs_monster:tree_monster", {
 	lava_damage = 0,
 	light_damage = 2,
 	fall_damage = 0,
+--	immune_to = {
+--		{"default:axe_diamond", 5},
+--		{"default:sapling", -5}, -- saplings heal
+--		{"all", 0},
+--	},
 	animation = {
 		speed_normal = 15,
 		speed_run = 15,