diff --git a/bee.lua b/bee.lua
index f0403d5..b878d22 100644
--- a/bee.lua
+++ b/bee.lua
@@ -1,6 +1,9 @@
 -- Translation support
 local S = minetest.get_translator("mobs_animal")
 
+-- check for default mod
+local mod_def = minetest.get_modpath("default")
+
 -- Bee by KrupnoPavel (.b3d model by sirrobzeroone)
 
 mobs:register_mob("mobs_animal:bee", {
@@ -92,7 +95,7 @@ minetest.register_node(":mobs:beehive", {
 	walkable = true,
 	groups = {oddly_breakable_by_hand = 3, flammable = 1, disable_suffocation = 1},
 	is_ground_content = false,
-	sounds = default and default.node_sound_defaults(),
+	sounds = mod_def and default.node_sound_defaults(),
 
 	on_construct = function(pos)
 
@@ -166,7 +169,7 @@ minetest.register_node(":mobs:honey_block", {
 	tiles = {"mobs_honey_block.png"},
 	groups = {snappy = 3, flammable = 2},
 	is_ground_content = false,
-	sounds = default and default.node_sound_dirt_defaults()
+	sounds = mod_def and default.node_sound_dirt_defaults()
 })
 
 -- recipe
diff --git a/cow.lua b/cow.lua
index 77017aa..b8eadfd 100644
--- a/cow.lua
+++ b/cow.lua
@@ -1,6 +1,9 @@
 -- Translation support
 local S = minetest.get_translator("mobs_animal")
 
+-- check for default mod
+local mod_def = minetest.get_modpath("default")
+
 -- Cow by sirrobzeroone
 
 mobs:register_mob("mobs_animal:cow", {
@@ -261,7 +264,7 @@ minetest.register_node(":mobs:cheeseblock", {
 	tiles = {"mobs_cheeseblock.png"},
 	is_ground_content = false,
 	groups = {oddly_breakable_by_hand = 3},
-	sounds = default and default.node_sound_dirt_defaults()
+	sounds = mod_def and default.node_sound_dirt_defaults()
 })
 
 minetest.register_craft({