diff --git a/mods/MAPGEN/mcl_biomes/init.lua b/mods/MAPGEN/mcl_biomes/init.lua
index 7f03f2b43..6fa287792 100644
--- a/mods/MAPGEN/mcl_biomes/init.lua
+++ b/mods/MAPGEN/mcl_biomes/init.lua
@@ -857,9 +857,9 @@ local function register_dimension_ores()
 		ore_type       = "blob",
 		ore            = "mcl_nether:magma",
 		wherein         = {"mcl_nether:netherrack", "mcl_core:stone"},
-		clust_scarcity = 14*14*14,
-		clust_num_ores = 35,
-		clust_size     = 4,
+		clust_scarcity = 8*8*8,
+		clust_num_ores = 45,
+		clust_size     = 6,
 		y_min          = mcl_util.layer_to_y(23, "nether"),
 		y_max          = mcl_util.layer_to_y(37, "nether"),
 	})
@@ -867,9 +867,9 @@ local function register_dimension_ores()
 		ore_type       = "blob",
 		ore            = "mcl_nether:magma",
 		wherein        = {"mcl_nether:netherrack"},
-		clust_scarcity = 9*9*9,
-		clust_num_ores = 50,
-		clust_size     = 5,
+		clust_scarcity = 10*10*10,
+		clust_num_ores = 65,
+		clust_size     = 8,
 		y_min          = mcl_util.layer_to_y(23, "nether"),
 		y_max          = mcl_util.layer_to_y(37, "nether"),
 	})