diff --git a/init.lua b/init.lua
index 9a4cac1..ff5f94e 100644
--- a/init.lua
+++ b/init.lua
@@ -235,8 +235,8 @@ local oredefs = {
 		oredef = {clust_scarcity = moreores_silver_chunk_size * moreores_silver_chunk_size * moreores_silver_chunk_size,
 			clust_num_ores = moreores_silver_ore_per_chunk,
 			clust_size     = moreores_silver_chunk_size,
-			height_min     = moreores_silver_min_depth,
-			height_max     = moreores_silver_max_depth
+			y_min     = moreores_silver_min_depth,
+			y_max     = moreores_silver_max_depth
 			},
 		tools = {
 			pick = {
@@ -267,8 +267,8 @@ local oredefs = {
 		oredef = {clust_scarcity = moreores_tin_chunk_size * moreores_tin_chunk_size * moreores_tin_chunk_size,
 			clust_num_ores = moreores_tin_ore_per_chunk,
 			clust_size     = moreores_tin_chunk_size,
-			height_min     = moreores_tin_min_depth,
-			height_max     = moreores_tin_max_depth
+			y_min     = moreores_tin_min_depth,
+			y_max     = moreores_tin_max_depth
 			},
 		tools = {},
 	},
@@ -278,8 +278,8 @@ local oredefs = {
 		oredef = {clust_scarcity = moreores_mithril_chunk_size * moreores_mithril_chunk_size * moreores_mithril_chunk_size,
 			clust_num_ores = moreores_mithril_ore_per_chunk,
 			clust_size     = moreores_mithril_chunk_size,
-			height_min     = moreores_mithril_min_depth,
-			height_max     = moreores_mithril_max_depth
+			y_min     = moreores_mithril_min_depth,
+			y_max     = moreores_mithril_max_depth
 			},
 		tools = {
 			pick = {