diff --git a/mods/MAPGEN/mcl_biomes/init.lua b/mods/MAPGEN/mcl_biomes/init.lua
index 6bfa3325e..e065f619c 100644
--- a/mods/MAPGEN/mcl_biomes/init.lua
+++ b/mods/MAPGEN/mcl_biomes/init.lua
@@ -85,9 +85,7 @@ local function register_biomes()
 
 	]]
 
-	local DEEP_OCEAN_MAX = -11
-	local DEEP_OCEAN_MIN = -32 -- Careful when changing this. You might end up caves covered in gravel around Y=32!
-	local OCEAN_MIN = DEEP_OCEAN_MAX+1
+	local OCEAN_MIN = mcl_vars.mg_overworld_min
 
 	-- Ice Plains Spikes (rare)
 	minetest.register_biome({
@@ -1114,30 +1112,6 @@ local function register_biomes()
 		heat_point = 50,
 	})
 
-	-- Deep Ocean
-	-- Special biome below all other ocean biomes, used for generating gravel
-	minetest.register_biome({
-		name = "DeepOcean",
-		node_top = "mcl_core:gravel",
-		depth_top = 2,
-		node_filler = "mcl_core:gravel",
-		depth_filler = 2,
-		node_riverbed = "mcl_core:gravel",
-		depth_riverbed = 2,
-		y_min = DEEP_OCEAN_MIN,
-		y_max = DEEP_OCEAN_MAX,
-		heat_point = 50,
-		humidity_point = 50,
-	})
-
-	-- Underground biome, to prevent ocean floor materials “leaking” into the underground.
-	minetest.register_biome({
-		name = "underground",
-		y_min = mcl_vars.mg_overworld_min,
-		y_max = DEEP_OCEAN_MIN-1,
-		heat_point = 50,
-		humidity_point = 50,
-	})
 end
 
 -- Register biomes of non-Overworld biomes