diff --git a/mods/CORE/mcl_init/init.lua b/mods/CORE/mcl_init/init.lua
index 884ebfae..0fd944c6 100644
--- a/mods/CORE/mcl_init/init.lua
+++ b/mods/CORE/mcl_init/init.lua
@@ -131,9 +131,9 @@ mcl_vars.mg_overworld_max = mcl_vars.mapgen_edge_max
 
 -- The Nether (around Y = -29000)
 mcl_vars.mg_nether_min = -29067 -- Carefully chosen to be at a mapchunk border
-mcl_vars.mg_nether_max = mcl_vars.mg_nether_min + 128
+mcl_vars.mg_nether_max = mcl_vars.mg_nether_min + 256
 mcl_vars.mg_bedrock_nether_bottom_min = mcl_vars.mg_nether_min
-mcl_vars.mg_bedrock_nether_top_max = mcl_vars.mg_nether_max
+mcl_vars.mg_bedrock_nether_top_max = mcl_vars.mg_nether_max - 128
 if not superflat then
 	mcl_vars.mg_bedrock_nether_bottom_max = mcl_vars.mg_bedrock_nether_bottom_min + 4
 	mcl_vars.mg_bedrock_nether_top_min = mcl_vars.mg_bedrock_nether_top_max - 4
diff --git a/mods/MAPGEN/mcl_mapgen_core/init.lua b/mods/MAPGEN/mcl_mapgen_core/init.lua
index 97e68f95..c0c101e8 100644
--- a/mods/MAPGEN/mcl_mapgen_core/init.lua
+++ b/mods/MAPGEN/mcl_mapgen_core/init.lua
@@ -2022,9 +2022,32 @@ local function basic(vm, data, data2, emin, emax, area, minp, maxp, blockseed)
 	-- [[ THE NETHER:					mcl_vars.mg_nether_min			       mcl_vars.mg_nether_max							]]
 
 	-- The Air on the Nether roof, https://git.minetest.land/MineClone2/MineClone2/issues/1186
-	lvm_used = set_layers(data, area, c_air		 , nil, mcl_vars.mg_nether_max			   +1, mcl_vars.mg_nether_max + 128                 , minp, maxp, lvm_used, pr)
+	-- This was modified later, see https://git.minetest.land/Mineclonia/Mineclonia/issues/270
+	lvm_used = set_layers(
+		data,
+		area,
+		c_air,
+		nil,
+		mcl_vars.mg_bedrock_nether_top_max + 1,
+		mcl_vars.mg_nether_max,
+		minp,
+		maxp,
+		lvm_used,
+		pr
+	)
 	-- The Void above the Nether below the End:
-	lvm_used = set_layers(data, area, c_void         , nil, mcl_vars.mg_nether_max + 128               +1, mcl_vars.mg_end_min                        -1, minp, maxp, lvm_used, pr)
+	lvm_used = set_layers(
+		data,
+		area,
+		c_void,
+		nil,
+		mcl_vars.mg_nether_max + 1,
+		mcl_vars.mg_end_min - 1,
+		minp,
+		maxp,
+		lvm_used,
+		pr
+	)
 
 	-- [[ THE END:						mcl_vars.mg_end_min			       mcl_vars.mg_end_max							]]