diff --git a/init.lua b/init.lua
index 062c1e2..506e05e 100644
--- a/init.lua
+++ b/init.lua
@@ -1,17 +1,17 @@
 
-minetest.register_craftitem("get_biome_data:wand", {
+core.register_craftitem("get_biome_data:wand", {
 	description = "Biome Data Wand\n(right-click to get biome data in node's position)",
 	inventory_image = "get_biome_data_wand.png",
 	groups = {tool = 1},
 	on_place = function(itemstack, player, pointed_thing)
-		local biomedata = minetest.get_biome_data(pointed_thing.under)
+		local biomedata = core.get_biome_data(pointed_thing.under)
 
 		local str =
-				minetest.colorize("#aaa", "Biome: ")
-			 .. minetest.colorize("#0f0", minetest.get_biome_name(biomedata.biome))
-			 .. " ( heat: " .. minetest.colorize("#f00", biomedata.heat) .. ", humidity: " .. minetest.colorize("#55f", biomedata.humidity) .. ")"
+				core.colorize("#aaa", "Biome: ")
+			 .. core.colorize("#0f0", core.get_biome_name(biomedata.biome))
+			 .. " ( heat: " .. core.colorize("#f00", biomedata.heat) .. ", humidity: " .. core.colorize("#55f", biomedata.humidity) .. ")"
 
-		minetest.chat_send_player(player:get_player_name(), str)
+		core.chat_send_player(player:get_player_name(), str)
 
 		return itemstack
 	end,