diff --git a/computers/recipes.lua b/computers/recipes.lua
index 75eafb0..f6499b1 100644
--- a/computers/recipes.lua
+++ b/computers/recipes.lua
@@ -1,10 +1,11 @@
 -- Copyright (C) 2012-2013 Diego Martínez <kaeza@users.sf.net>
+local materials = xcompat.materials
 
 minetest.register_craft({
 	output = "computers:shefriendSOO",
 	recipe = {
 		{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
-		{ "basic_materials:plastic_sheet", "default:glass", "basic_materials:plastic_sheet" },
+		{ "basic_materials:plastic_sheet", materials.glass, "basic_materials:plastic_sheet" },
 		{ "basic_materials:plastic_sheet", "group:wood", "basic_materials:plastic_sheet" }
 	}
 })
@@ -21,7 +22,7 @@ minetest.register_craft({
 	output = "computers:vanio",
 	recipe = {
 		{ "basic_materials:plastic_sheet", "", "" },
-		{ "default:glass", "", "" },
+		{ materials.glass, "", "" },
 		{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
 	}
 })
@@ -39,7 +40,7 @@ minetest.register_craft({
 	output = "computers:slaystation2",
 	recipe = {
 		{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
-		{ "basic_materials:plastic_sheet", "default:steel_ingot", "basic_materials:plastic_sheet" }
+		{ "basic_materials:plastic_sheet", materials.steel_ingot, "basic_materials:plastic_sheet" }
 	}
 })
 
@@ -55,7 +56,7 @@ minetest.register_craft({
 	output = "computers:admiral128",
 	recipe = {
 		{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
-		{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
+		{ materials.steel_ingot, materials.steel_ingot, materials.steel_ingot }
 	}
 })
 
@@ -63,7 +64,7 @@ minetest.register_craft({
 	output = "computers:wee",
 	recipe = {
 		{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
-		{ "basic_materials:plastic_sheet", "default:copper_ingot", "basic_materials:plastic_sheet" }
+		{ "basic_materials:plastic_sheet", materials.copper_ingot, "basic_materials:plastic_sheet" }
 	}
 })
 
@@ -71,7 +72,7 @@ minetest.register_craft({
 	output = "computers:piepad",
 	recipe = {
 		{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
-		{ "basic_materials:plastic_sheet", "default:glass", "basic_materials:plastic_sheet" }
+		{ "basic_materials:plastic_sheet", materials.glass, "basic_materials:plastic_sheet" }
 	}
 })
 
@@ -80,45 +81,45 @@ minetest.register_craft({
 minetest.register_craft({
 	output = "computers:monitor",
 	recipe = {
-		{ "basic_materials:plastic_sheet", "default:glass","" },
-		{ "basic_materials:plastic_sheet", "default:glass","" },
-		{ "basic_materials:plastic_sheet", "default:mese_crystal_fragment", "basic_materials:plastic_sheet" }
+		{ "basic_materials:plastic_sheet", materials.glass,"" },
+		{ "basic_materials:plastic_sheet", materials.glass,"" },
+		{ "basic_materials:plastic_sheet", materials.mese_crystal_fragment, "basic_materials:plastic_sheet" }
 	}
 })
 
 minetest.register_craft({
 	output = "computers:router",
 	recipe = {
-		{ "default:steel_ingot","","" },
-		{ "default:steel_ingot" ,"basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
-		{ "default:mese_crystal_fragment","basic_materials:plastic_sheet", "basic_materials:plastic_sheet"  }
+		{ materials.steel_ingot,"","" },
+		{ materials.steel_ingot ,"basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+		{ materials.mese_crystal_fragment,"basic_materials:plastic_sheet", "basic_materials:plastic_sheet"  }
 	}
 })
 
 minetest.register_craft({
 	output = "computers:tower",
 	recipe = {
-		{ "basic_materials:plastic_sheet", "default:steel_ingot", "basic_materials:plastic_sheet" },
-		{ "basic_materials:plastic_sheet", "default:mese_crystal", "basic_materials:plastic_sheet" },
-		{ "basic_materials:plastic_sheet", "default:steel_ingot", "basic_materials:plastic_sheet" }
+		{ "basic_materials:plastic_sheet", materials.steel_ingot, "basic_materials:plastic_sheet" },
+		{ "basic_materials:plastic_sheet", materials.mese_crystal, "basic_materials:plastic_sheet" },
+		{ "basic_materials:plastic_sheet", materials.steel_ingot, "basic_materials:plastic_sheet" }
 	}
 })
 
 minetest.register_craft({
 	output = "computers:printer",
 	recipe = {
-		{ "basic_materials:plastic_sheet", "default:steel_ingot","" },
-		{ "basic_materials:plastic_sheet", "default:mese_crystal", "basic_materials:plastic_sheet" },
-		{ "basic_materials:plastic_sheet", "default:coal_lump", "basic_materials:plastic_sheet" }
+		{ "basic_materials:plastic_sheet", materials.steel_ingot,"" },
+		{ "basic_materials:plastic_sheet", materials.mese_crystal, "basic_materials:plastic_sheet" },
+		{ "basic_materials:plastic_sheet", materials.coal_lump, "basic_materials:plastic_sheet" }
 	}
 })
 
 minetest.register_craft({
 	output = "computers:printer",
 	recipe = {
-		{ "basic_materials:plastic_sheet", "default:steel_ingot","" },
-		{ "basic_materials:plastic_sheet", "default:mese_crystal", "basic_materials:plastic_sheet" },
-		{ "basic_materials:plastic_sheet", "dye:black", "basic_materials:plastic_sheet", }
+		{ "basic_materials:plastic_sheet", materials.steel_ingot,"" },
+		{ "basic_materials:plastic_sheet", materials.mese_crystal, "basic_materials:plastic_sheet" },
+		{ "basic_materials:plastic_sheet", materials.dye_black, "basic_materials:plastic_sheet", }
 	}
 })
 
@@ -135,7 +136,7 @@ minetest.register_craft({
 	output = "computers:tetris_arcade",
 	recipe = {
 		{ "basic_materials:plastic_sheet", "basic_materials:energy_crystal_simple", "basic_materials:plastic_sheet", },
-		{ "dye:black", "default:glass", "dye:black" },
+		{ materials.dye_black, materials.glass, materials.dye_black },
 		{ "basic_materials:plastic_sheet", "basic_materials:energy_crystal_simple", "basic_materials:plastic_sheet" }
 	}
 })