diff --git a/lava_flan.lua b/lava_flan.lua
index cbf1cf9..800755e 100644
--- a/lava_flan.lua
+++ b/lava_flan.lua
@@ -37,6 +37,7 @@ mobs:register_mob("mobs_monster:lava_flan", {
 	},
 	water_damage = 8,
 	lava_damage = 0,
+	fire_damage = 0,
 	light_damage = 0,
 	immune_to = {
 		{"mobs:pick_lava", -2}, -- lava pick heals 2 health
diff --git a/sand_monster.lua b/sand_monster.lua
index 21c5af6..67595be 100644
--- a/sand_monster.lua
+++ b/sand_monster.lua
@@ -39,6 +39,7 @@ mobs:register_mob("mobs_monster:sand_monster", {
 	attack_type = "dogfight",
 	pathfinding = true,
 	--specific_attack = {"player", "mobs_npc:npc"},
+	--ignore_invisibility = true,
 	reach = 2,
 	damage = 1,
 	hp_min = 4,