diff --git a/technic_worldgen/oregen.lua b/technic_worldgen/oregen.lua
index 4aca7f1..795f0ec 100644
--- a/technic_worldgen/oregen.lua
+++ b/technic_worldgen/oregen.lua
@@ -17,8 +17,8 @@ minetest.register_ore({
 	clust_scarcity   = 8*8*8,
 	clust_num_ores   = 4,
 	clust_size       = 3,
-	height_min       = -300,
-	height_max       = -80,
+	y_min       = -300,
+	y_max       = -80,
 	noise_params     = uranium_params,
 	noise_threshhold = uranium_threshhold,
 })
@@ -30,8 +30,8 @@ minetest.register_ore({
 	clust_scarcity   = 8*8*8,
 	clust_num_ores   = 2,
 	clust_size       = 3,
-	height_min       = -200,
-	height_max       = -100,
+	y_min       = -200,
+	y_max       = -100,
 	noise_params     = chromium_params,
 	noise_threshhold = chromium_threshhold,
 })
@@ -43,8 +43,8 @@ minetest.register_ore({
 	clust_scarcity   = 6*6*6,
 	clust_num_ores   = 2,
 	clust_size       = 3,
-	height_min       = -31000,
-	height_max       = -200,
+	y_min       = -31000,
+	y_max       = -200,
 	flags            = "absheight",
 	noise_params     = chromium_params,
 	noise_threshhold = chromium_threshhold,
@@ -57,8 +57,8 @@ minetest.register_ore({
 	clust_scarcity   = 8*8*8,
 	clust_num_ores   = 4,
 	clust_size       = 3,
-	height_min       = -32,
-	height_max       = 2,
+	y_min       = -32,
+	y_max       = 2,
 	noise_params     = zinc_params,
 	noise_threshhold = zinc_threshhold,
 })
@@ -70,8 +70,8 @@ minetest.register_ore({
 	clust_scarcity   = 6*6*6,
 	clust_num_ores   = 4,
 	clust_size       = 3,
-	height_min       = -31000,
-	height_max       = -32,
+	y_min       = -31000,
+	y_max       = -32,
 	flags            = "absheight",
 	noise_params     = zinc_params,
 	noise_threshhold = zinc_threshhold,
@@ -84,8 +84,8 @@ minetest.register_ore({
 	clust_scarcity   = 9*9*9,
 	clust_num_ores   = 5,
 	clust_size       = 3,
-	height_min       = -16,
-	height_max       = 16,
+	y_min       = -16,
+	y_max       = 16,
 	noise_params     = lead_params,
 	noise_threshhold = lead_threshhold,
 })
@@ -97,8 +97,8 @@ minetest.register_ore({
 	clust_scarcity   = 8*8*8,
 	clust_num_ores   = 5,
 	clust_size       = 3,
-	height_min       = -128,
-	height_max       = -16,
+	y_min       = -128,
+	y_max       = -16,
 	noise_params     = lead_params,
 	noise_threshhold = lead_threshhold,
 })
@@ -110,8 +110,8 @@ minetest.register_ore({
 	clust_scarcity   = 6*6*6,
 	clust_num_ores   = 5,
 	clust_size       = 3,
-	height_min       = -31000,
-	height_max       = -128,
+	y_min       = -31000,
+	y_max       = -128,
 	flags            = "absheight",
 	noise_params     = lead_params,
 	noise_threshhold = lead_threshhold,
@@ -167,8 +167,8 @@ minetest.register_ore({
 	clust_scarcity = 1,
 	clust_num_ores = 1,
 	clust_size     = 3,
-	height_min     = -31000,
-	height_max     = -50,
+	y_min     = -31000,
+	y_max     = -50,
 	noise_threshhold = 0.4,
 	noise_params = {offset=0, scale=15, spread={x=150, y=150, z=150}, seed=23, octaves=3, persist=0.70}
 })
@@ -182,8 +182,8 @@ minetest.register_ore({
 	clust_scarcity = 1,
 	clust_num_ores = 1,
 	clust_size     = 4,
-	height_min     = -31000,
-	height_max     = -150,
+	y_min     = -31000,
+	y_max     = -150,
 	noise_threshhold = 0.4,
 	noise_params = {offset=0, scale=15, spread={x=130, y=130, z=130}, seed=24, octaves=3, persist=0.70}
 })