diff --git a/grindstone.lua b/grindstone.lua
index e6ff2e7..aa32150 100644
--- a/grindstone.lua
+++ b/grindstone.lua
@@ -89,7 +89,6 @@ minetest.register_node('x_enchanting:grindstone', {
         local p_name = clicker:get_player_name()
         local inv = meta:get_inventory()
         local item_stack = inv:get_stack('item', 1)
-        local item_stack_meta = item_stack:get_meta()
         local has_all_cursed_ench = XEnchanting:has_all_cursed_ench(item_stack)
 
         if minetest.is_protected(pos, p_name) then
@@ -281,7 +280,6 @@ minetest.register_node('x_enchanting:grindstone', {
         local result_stack = inv:get_stack('result', 1)
         local item_stack = inv:get_stack('item', 1)
         local item_stack_meta = item_stack:get_meta()
-        local is_enchanted = item_stack_meta:get_int('is_enchanted')
         local has_all_cursed_ench = XEnchanting:has_all_cursed_ench(item_stack)
         local stack_enchantment_data = minetest.deserialize(item_stack_meta:get_string('x_enchanting')) or {}
         local result_payment_stack = ItemStack({ name = 'default:mese_crystal_fragment' })