diff --git a/api.lua b/api.lua
index f4b1fcd..fde125c 100644
--- a/api.lua
+++ b/api.lua
@@ -334,14 +334,17 @@ function mobs:register_mob(name, def)
 end
 
 mobs.spawning_mobs = {}
-function mobs:register_spawn(name, nodes, max_light, min_light, chance, mobs_per_30_block_radius, max_height)
+function mobs:register_spawn(name, nodes, max_light, min_light, chance, active_object_count, max_height)
 	mobs.spawning_mobs[name] = true
 	minetest.register_abm({
 	nodenames = nodes,
 	neighbors = nodes,
 	interval = 30,
 	chance = chance,
-	action = function(pos, node)
+	action = function(pos, node, _, active_object_count_wider)
+		if active_object_count_wider > active_object_count then
+			return
+		end
 		if not mobs.spawning_mobs[name] then
 			return
 		end
@@ -366,18 +369,6 @@ function mobs:register_spawn(name, nodes, max_light, min_light, chance, mobs_per
 			return
 		end
 		
-		local count = 0
-		for _,obj in pairs(minetest.env:get_objects_inside_radius(pos, 30)) do
-			if obj:is_player() then
-				return
-			elseif obj:get_luaentity() and obj:get_luaentity().name == name then
-				count = count+1
-			end
-		end
-		if count > mobs_per_30_block_radius then
-			return
-		end
-		
 		if minetest.setting_getbool("display_mob_spawn") then
 			minetest.chat_send_all("[mobs] Add "..name.." at "..minetest.pos_to_string(pos))
 		end
diff --git a/init.lua b/init.lua
index b96e244..881d305 100644
--- a/init.lua
+++ b/init.lua
@@ -122,7 +122,7 @@ mobs:register_mob("mobs:sheep", {
 		end
 	end,
 })
-mobs:register_spawn("mobs:sheep", {"default:dirt_with_grass"}, 20, 8, 9000, 0, 31000)
+mobs:register_spawn("mobs:sheep", {"default:dirt_with_grass"}, 20, 8, 9000, 1, 31000)
 
 minetest.register_craftitem("mobs:meat_raw", {
 	description = "Raw Meat",
@@ -248,7 +248,7 @@ mobs:register_mob("mobs:dungeon_master", {
 		attack = "mobs_fireball",
 	},
 })
-mobs:register_spawn("mobs:dungeon_master", {"default:stone"}, 2, -1, 7000, 0, -50)
+mobs:register_spawn("mobs:dungeon_master", {"default:stone"}, 2, -1, 7000, 1, -50)
 
 mobs:register_arrow("mobs:fireball", {
 	visual = "sprite",