diff --git a/.luacheckrc b/.luacheckrc
index f263b837..afcc2a8f 100644
--- a/.luacheckrc
+++ b/.luacheckrc
@@ -28,7 +28,7 @@ read_globals = {
 	"unifieddyes", "digiline_remote",
 	"drawers", "mg",
 	"craftguide", "i3", "mtt",
-	"vizlib", "mcl_sounds",
+	"vizlib", "mcl_sounds", "mcl_vars",
 
 	-- Only used in technic/machines/MV/lighting.lua (disabled)
 	"isprotect", "homedecor_expect_infinite_stacks",
diff --git a/technic_worldgen/mod.conf b/technic_worldgen/mod.conf
index f7991cca..10558948 100644
--- a/technic_worldgen/mod.conf
+++ b/technic_worldgen/mod.conf
@@ -1,3 +1,3 @@
 name = technic_worldgen
 depends =
-optional_depends = default, mcl_core, mcl_sounds, mg
+optional_depends = default, mcl_core, mcl_sounds, mcl_init, mg
diff --git a/technic_worldgen/oregen.lua b/technic_worldgen/oregen.lua
index f6fd502c..18d54079 100644
--- a/technic_worldgen/oregen.lua
+++ b/technic_worldgen/oregen.lua
@@ -1,4 +1,5 @@
 
+local has_mcl = minetest.get_modpath("mcl_core")
 local stones = {"default:stone", "mcl_core:stone", "mcl_deepslate:deepslate"}
 
 local uranium_params = {
@@ -48,8 +49,8 @@ minetest.register_ore({
 	clust_scarcity = 8*8*8,
 	clust_num_ores = 4,
 	clust_size = 3,
-	y_min = -300,
-	y_max = -80,
+	y_min = has_mcl and mcl_vars.mg_overworld_min or -300,
+	y_max = has_mcl and -30 or -80,
 	noise_params = uranium_params,
 	noise_threshold = uranium_threshold,
 })
@@ -61,8 +62,8 @@ minetest.register_ore({
 	clust_scarcity = 8*8*8,
 	clust_num_ores = 2,
 	clust_size = 3,
-	y_min = -200,
-	y_max = -100,
+	y_min = has_mcl and mcl_vars.mg_overworld_min or -200,
+	y_max = has_mcl and -30 or -100,
 	noise_params = chromium_params,
 	noise_threshold = chromium_threshold,
 })
@@ -74,8 +75,8 @@ minetest.register_ore({
 	clust_scarcity = 6*6*6,
 	clust_num_ores = 2,
 	clust_size = 3,
-	y_min = -31000,
-	y_max = -200,
+	y_min = has_mcl and mcl_vars.mg_overworld_min or -31000,
+	y_max = has_mcl and -30 or -200,
 	flags = "absheight",
 	noise_params = chromium_params,
 	noise_threshold = chromium_threshold,
@@ -101,7 +102,7 @@ minetest.register_ore({
 	clust_scarcity = 6*6*6,
 	clust_num_ores = 4,
 	clust_size = 3,
-	y_min = -31000,
+	y_min = has_mcl and mcl_vars.mg_overworld_min or -31000,
 	y_max = -32,
 	flags = "absheight",
 	noise_params = zinc_params,
@@ -128,7 +129,7 @@ minetest.register_ore({
 	clust_scarcity = 8*8*8,
 	clust_num_ores = 5,
 	clust_size = 3,
-	y_min = -128,
+	y_min = has_mcl and mcl_vars.mg_overworld_min or -128,
 	y_max = -16,
 	noise_params = lead_params,
 	noise_threshold = lead_threshold,
@@ -141,8 +142,8 @@ minetest.register_ore({
 	clust_scarcity = 6*6*6,
 	clust_num_ores = 5,
 	clust_size = 3,
-	y_min = -31000,
-	y_max = -128,
+	y_min = has_mcl and mcl_vars.mg_overworld_min or -31000,
+	y_max = has_mcl and -30 or -128,
 	flags = "absheight",
 	noise_params = lead_params,
 	noise_threshold = lead_threshold,
@@ -152,8 +153,6 @@ minetest.register_ore({
 local sulfur_buf = {}
 local sulfur_noise
 
-local has_mcl = minetest.get_modpath("mcl_core")
-
 minetest.register_on_generated(function(minp, maxp)
 	local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
 	local a = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
@@ -206,8 +205,8 @@ if technic.config:get_bool("enable_marble_generation") then
 		clust_scarcity = 1,
 		clust_num_ores = 1,
 		clust_size = 3,
-		y_min = -31000,
-		y_max = -50,
+		y_min = has_mcl and mcl_vars.mg_overworld_min or -31000,
+		y_max = has_mcl and -30 or -50,
 		noise_threshold = 0.4,
 		noise_params = {
 			offset = 0, scale = 15, spread = {x = 150, y = 150, z = 150},