diff --git a/admin.lua b/admin.lua
index c7c4446..cbd5e49 100644
--- a/admin.lua
+++ b/admin.lua
@@ -159,6 +159,7 @@ minetest.register_node("protector:protect_hidden", {
 	floodable = false,
 	drop = "",
 	groups = {not_in_creative_inventory = 1, unbreakable = 1},
+	is_ground_content = false,
 	on_blast = function() end,
 	-- 1px block inside door hinge near node top
 	collision_box = {
diff --git a/doors_chest.lua b/doors_chest.lua
index 40a484b..4a60cd1 100644
--- a/doors_chest.lua
+++ b/doors_chest.lua
@@ -31,7 +31,7 @@ function register_door(name, def)
 		inventory_image = def.inventory_image,
 
 		on_place = function(itemstack, placer, pointed_thing)
-			if not pointed_thing.type == "node" then
+			if pointed_thing.type ~= "node" then
 				return itemstack
 			end
 
@@ -132,7 +132,7 @@ function register_door(name, def)
 		end
 
 		pos.y = pos.y + dir
-		if not minetest.get_node(pos).name == check_name then
+		if minetest.get_node(pos).name ~= check_name then
 			return false
 		end
 		if minetest.is_protected(pos, user:get_player_name()) then
@@ -166,6 +166,7 @@ function register_door(name, def)
 			type = "fixed",
 			fixed = def.selection_box_bottom
 		},
+		use_texture_alpha = def.use_texture_alpha,
 		groups = def.groups,
 		_mcl_hardness = 0.8,
 		_mcl_blast_resistance = 1,
@@ -206,6 +207,7 @@ function register_door(name, def)
 			type = "fixed",
 			fixed = def.selection_box_top
 		},
+		use_texture_alpha = def.use_texture_alpha,
 		groups = def.groups,
 		_mcl_hardness = 0.8,
 		_mcl_blast_resistance = 1,
@@ -246,6 +248,7 @@ function register_door(name, def)
 			type = "fixed",
 			fixed = def.selection_box_bottom
 		},
+		use_texture_alpha = def.use_texture_alpha,
 		groups = def.groups,
 		_mcl_hardness = 0.8,
 		_mcl_blast_resistance = 1,
@@ -286,6 +289,7 @@ function register_door(name, def)
 			type = "fixed",
 			fixed = def.selection_box_top
 		},
+		use_texture_alpha = def.use_texture_alpha,
 		groups = def.groups,
 		_mcl_hardness = 0.8,
 		_mcl_blast_resistance = 1,
@@ -318,6 +322,7 @@ local name = "protector:door_wood"
 register_door(name, {
 	description = S("Protected Wooden Door"),
 	inventory_image = "doors_wood.png^protector_logo.png",
+	use_texture_alpha = "clip",
 	groups = {
 		snappy = 1, choppy = 2, dig_immediate = 2,
 		unbreakable = 1, axey = 1, --door = 1
@@ -362,6 +367,7 @@ local name = "protector:door_steel"
 register_door(name, {
 	description = S("Protected Steel Door"),
 	inventory_image = "doors_steel.png^protector_logo.png",
+	use_texture_alpha = "clip",
 	groups = {
 		snappy = 1, bendy = 2, cracky = 1,
 		level = mcl and 0 or 2, pickaxey = 2, unbreakable = 1, -- door = 1
diff --git a/hud.lua b/hud.lua
index 4a5d711..dba31bd 100644
--- a/hud.lua
+++ b/hud.lua
@@ -8,6 +8,7 @@ if radius > 22 then radius = 22 end
 local hud = {}
 local hud_timer = 0
 local hud_interval = (tonumber(minetest.settings:get("protector_hud_interval")) or 5)
+local hud_style = minetest.has_feature("hud_def_type_field")
 
 if hud_interval > 0 then
 minetest.register_globalstep(function(dtime)
@@ -42,8 +43,7 @@ minetest.register_globalstep(function(dtime)
 
 			hud[name] = {}
 
-			hud[name].id = player:hud_add({
-				hud_elem_type = "text",
+			local hud_tab = {
 				name = "Protector Area",
 				number = 0xFFFF22,
 				position = {x = 0, y = 0.95},
@@ -51,7 +51,15 @@ minetest.register_globalstep(function(dtime)
 				text = hud_text,
 				scale = {x = 200, y = 60},
 				alignment = {x = 1, y = -1},
-			})
+			}
+
+			if hud_style then
+				hud_tab["type"] = "text"
+			else
+				hud_tab["hud_elem_type"] = "text"
+			end
+
+			hud[name].id = player:hud_add(hud_tab)
 
 			return
 		else
diff --git a/init.lua b/init.lua
index c57aacf..62adb10 100644
--- a/init.lua
+++ b/init.lua
@@ -592,6 +592,7 @@ minetest.register_node("protector:protect2", {
 	inventory_image = "protector_logo.png",
 	sounds = default.node_sound_stone_defaults(),
 	groups = {dig_immediate = 2, unbreakable = 1},
+	is_ground_content = false,
 	use_texture_alpha = "clip",
 	paramtype = "light",
 	paramtype2 = "wallmounted",