diff --git a/machines/iron_furnace.lua b/machines/iron_furnace.lua
index 7eeafe2..56fc7fa 100644
--- a/machines/iron_furnace.lua
+++ b/machines/iron_furnace.lua
@@ -41,7 +41,7 @@ industrialtest.internal.unpackTableInto(industrialtest.IronFurnace,{
 		lightSource=8
 	},
 	facedir=true,
-	storageSlots={
+	storageLists={
 		"src",
 		"fuel",
 		"dst"
diff --git a/machines/machine.lua b/machines/machine.lua
index b28ddb4..f64f1a5 100644
--- a/machines/machine.lua
+++ b/machines/machine.lua
@@ -171,7 +171,7 @@ function industrialtest.Machine.createDefinitionTable(self)
 		def.can_dig=function(pos)
 			local meta=minetest.get_meta(pos)
 			local inv=meta:get_inventory()
-			for _,value in ipairs(self.storageSlots) do
+			for _,value in ipairs(self.storageLists) do
 				if inv:get_stack(value,1):get_count()>0 then
 					return false
 				end
@@ -180,10 +180,10 @@ function industrialtest.Machine.createDefinitionTable(self)
 		end
 	elseif industrialtest.mclAvailable then
 		def.after_dig_node=function(pos,oldnode,oldmeta)
-			industrialtest.internal.mclAfterDigNode(pos,oldmeta,self.storageSlots)
+			industrialtest.internal.mclAfterDigNode(pos,oldmeta,self.storageLists)
 		end
-		if config.sounds=="metal" then
-			definition.sounds=mcl_sounds.node_sound_metal_defaults()
+		if self.sounds=="metal" then
+			def.sounds=mcl_sounds.node_sound_metal_defaults()
 		end
 		def.groups={
 			pickaxey=1,