diff --git a/mods/ENTITIES/mcl_mobs/api.lua b/mods/ENTITIES/mcl_mobs/api.lua
index 935110447..a898ed979 100644
--- a/mods/ENTITIES/mcl_mobs/api.lua
+++ b/mods/ENTITIES/mcl_mobs/api.lua
@@ -303,6 +303,7 @@ end
 function mob_class:on_step(dtime)
 	self.lifetimer = self.lifetimer - dtime
 	local pos = self.object:get_pos()
+	if not pos then return end
 	if self:check_despawn(pos) then return true end
 
 	local d = 0.85
@@ -363,8 +364,8 @@ function mob_class:on_step(dtime)
 	self:follow_flop()
 	--set animation speed relitive to velocity
 	self:set_animation_speed()
-	self:check_smooth_rotation()
-	self:check_head_swivel()
+	self:check_smooth_rotation(dtime)
+	self:check_head_swivel(dtime)
 
 	self:do_jump()
 	self:set_armor_texture()
diff --git a/mods/ENTITIES/mcl_mobs/effects.lua b/mods/ENTITIES/mcl_mobs/effects.lua
index d02b5058b..69ad186d6 100644
--- a/mods/ENTITIES/mcl_mobs/effects.lua
+++ b/mods/ENTITIES/mcl_mobs/effects.lua
@@ -279,10 +279,10 @@ local function dir_to_pitch(dir)
 	return -math.atan2(-dir.y, xz)
 end
 
-function mob_class:check_head_swivel()
-	if self.head_swivel and type(self.head_swivel) == "string" then
+function mob_class:check_head_swivel(dtime)
+	if not self.head_swivel or type(self.head_swivel) ~= "string" then return end
 		local final_rotation = vector.new(0,0,0)
-		local oldp,oldr = self.object:get_bone_position(self.head_swivel)
+		local pos = self.object:get_pos()
 
 		for _, obj in pairs(minetest.get_objects_inside_radius(pos, 10)) do
 			if obj:is_player() and not self.attack or obj:get_luaentity() and obj:get_luaentity().name == self.name and self ~= obj:get_luaentity() then
diff --git a/mods/ENTITIES/mcl_mobs/items.lua b/mods/ENTITIES/mcl_mobs/items.lua
index 0976fa1a7..267dd8595 100644
--- a/mods/ENTITIES/mcl_mobs/items.lua
+++ b/mods/ENTITIES/mcl_mobs/items.lua
@@ -59,6 +59,7 @@ end
 function mob_class:check_item_pickup()
 	if self.pick_up and #self.pick_up > 0 or self.wears_armor then
 		local p = self.object:get_pos()
+		if not p then return end
 		for _,o in pairs(minetest.get_objects_inside_radius(p,2)) do
 			local l=o:get_luaentity()
 			if l and l.name == "__builtin:item" then
diff --git a/mods/ENTITIES/mcl_mobs/movement.lua b/mods/ENTITIES/mcl_mobs/movement.lua
index eedf65b29..3eed56cbe 100644
--- a/mods/ENTITIES/mcl_mobs/movement.lua
+++ b/mods/ENTITIES/mcl_mobs/movement.lua
@@ -1355,7 +1355,7 @@ function mob_class:do_states(dtime)
 	end
 end
 
-function mob_class:check_smooth_rotation()
+function mob_class:check_smooth_rotation(dtime)
 	-- smooth rotation by ThomasMonroe314
 	if self._turn_to then
 		self:set_yaw( self._turn_to, .1)
diff --git a/mods/ENTITIES/mcl_mobs/physics.lua b/mods/ENTITIES/mcl_mobs/physics.lua
index 1a393f505..a03e21543 100644
--- a/mods/ENTITIES/mcl_mobs/physics.lua
+++ b/mods/ENTITIES/mcl_mobs/physics.lua
@@ -39,6 +39,7 @@ local function within_limits(pos, radius)
 		wmin = wmin - radius
 		wmax = wmax + radius
 	end
+	if not pos then return true end
 	for _,v in pairs(pos) do
 		if v < wmin or v > wmax then return false end
 	end
@@ -582,6 +583,7 @@ function mob_class:do_env_damage()
 	end
 
 	local pos = self.object:get_pos()
+	if not pos then return end
 
 	self.time_of_day = minetest.get_timeofday()
 
@@ -592,10 +594,7 @@ function mob_class:do_env_damage()
 		return true
 	end
 
-	local sunlight = 10
-	if within_limits(pos,0) then
-		sunlight = minetest.get_natural_light(pos, self.time_of_day)
-	end
+	local sunlight = minetest.get_natural_light(pos, self.time_of_day)
 
 	-- bright light harms mob
 	if self.light_damage ~= 0 and (sunlight or 0) > 12 then