diff --git a/elepower_dynamics/components.lua b/elepower_dynamics/components.lua
index 5b14401..290ef89 100644
--- a/elepower_dynamics/components.lua
+++ b/elepower_dynamics/components.lua
@@ -15,7 +15,7 @@ local list_def = {
 	{material = "electrum",   description = "Electrum",   color = "#ebeb90", dust = true, plate = true, gear = true},
 	{material = "viridisium", description = "Viridisium", color = "#5b9751", dust = true, plate = true, gear = true},
 	{material = "zinc",       description = "Zinc",       color = "#598a9e", dust = true, plate = true},
-	{material = "coal",       description = "Coal",       color = "#0d0d0d", dust = true},
+	{material = "coal",       description = "Coal",       color = "#0b0b0b", dust = true},
 	{material = "wood",       description = "Wood",       color = "#847454", dust = "Sawdust", gear = true}
 }
 
diff --git a/elepower_dynamics/crafting.lua b/elepower_dynamics/crafting.lua
index 81c06fa..3a0078b 100644
--- a/elepower_dynamics/crafting.lua
+++ b/elepower_dynamics/crafting.lua
@@ -131,9 +131,9 @@ minetest.register_craft({
 minetest.register_craft({
 	output = "elepower_dynamics:fluid_duct 8",
 	recipe = {
-		{"group:glass",  "group:glass",  "group:glass"},
+		{"default:glass",  "default:glass",  "default:glass"},
 		{"elepower_dynamics:lead_ingot", "elepower_dynamics:lead_ingot", "elepower_dynamics:lead_ingot"},
-		{"group:glass",  "group:glass",  "group:glass"},
+		{"default:glass",  "default:glass",  "default:glass"},
 	}
 })
 
@@ -141,8 +141,8 @@ minetest.register_craft({
 minetest.register_craft({
 	output = "elepower_dynamics:portable_tank",
 	recipe = {
-		{"group:glass", "elepower_dynamics:fluid_duct", "group:glass"},
-		{"group:glass", "group:glass", "group:glass"},
+		{"default:glass", "elepower_dynamics:fluid_duct", "default:glass"},
+		{"default:glass", "default:glass", "default:glass"},
 		{"default:bronze_ingot",  "default:bronze_ingot", "default:bronze_ingot"},
 	}
 })
@@ -301,7 +301,7 @@ minetest.register_craft({
 minetest.register_craft({
 	output = "elepower_dynamics:pv_cell",
 	recipe = {
-		{"group:glass", "group:glass", "group:glass"},
+		{"default:glass", "default:glass", "default:glass"},
 		{"group:color_blue", "elepower_dynamics:silicon_wafer_doped", "group:color_blue"},
 		{"default:mese_crystal_fragment", "elepower_dynamics:wound_copper_coil", "default:mese_crystal_fragment"}
 	}
diff --git a/elepower_farming/crafting.lua b/elepower_farming/crafting.lua
index b1504e4..5f51691 100644
--- a/elepower_farming/crafting.lua
+++ b/elepower_farming/crafting.lua
@@ -13,9 +13,9 @@ end
 minetest.register_craft({
 	output = "elepower_farming:device_frame",
 	recipe = {
-		{"homedecor:plastic_sheeting", "group:glass", "homedecor:plastic_sheeting"},
-		{"group:glass", "default:mese_crystal", "group:glass"},
-		{"homedecor:plastic_sheeting", "group:glass", "homedecor:plastic_sheeting"},
+		{"homedecor:plastic_sheeting", "default:glass", "homedecor:plastic_sheeting"},
+		{"default:glass", "default:mese_crystal", "default:glass"},
+		{"homedecor:plastic_sheeting", "default:glass", "homedecor:plastic_sheeting"},
 	}
 })
 
diff --git a/elepower_machines/crafting.lua b/elepower_machines/crafting.lua
index a4d97db..6caa798 100644
--- a/elepower_machines/crafting.lua
+++ b/elepower_machines/crafting.lua
@@ -442,7 +442,7 @@ minetest.register_craft({
 	output = "elepower_machines:accumulator",
 	recipe = {
 		{"", "elepower_dynamics:fluid_duct", ""},
-		{"group:glass", "elepower_machines:machine_block", "group:glass"},
+		{"default:glass", "elepower_machines:machine_block", "default:glass"},
 		{"elepower_dynamics:steel_gear", "elepower_dynamics:servo_valve", "elepower_dynamics:steel_gear"},
 	}
 })
diff --git a/elepower_solar/crafting.lua b/elepower_solar/crafting.lua
index db67cc3..6e16c52 100644
--- a/elepower_solar/crafting.lua
+++ b/elepower_solar/crafting.lua
@@ -3,8 +3,8 @@
 minetest.register_craft({
 	output = "elepower_solar:solar_generator",
 	recipe = {
-		{"group:glass", "elepower_dynamics:pv_cell", "group:glass"},
-		{"elepower_dynamics:pv_cell", "group:glass", "elepower_dynamics:pv_cell"},
+		{"default:glass", "elepower_dynamics:pv_cell", "default:glass"},
+		{"elepower_dynamics:pv_cell", "default:glass", "elepower_dynamics:pv_cell"},
 		{"default:steel_ingot", "elepower_dynamics:battery", "default:steel_ingot"},
 	}
 })