diff --git a/table.lua b/table.lua
index 9ef39c5..c621d4d 100644
--- a/table.lua
+++ b/table.lua
@@ -423,7 +423,7 @@ minetest.register_on_player_receive_fields(function(player, name, fields)
 
             if is_positive and can_afford(cost, meta) then
                 meta:set_int("paper",  meta:get_int("paper") - cost.paper);
-                meta:set_int("pigment", meta:get_int("paper") - cost.pigment);
+                meta:set_int("pigment", meta:get_int("pigment") - cost.pigment);
 
                 local inv = meta:get_inventory();
                 local stack = inv:get_stack("output", 1);
@@ -448,7 +448,7 @@ minetest.register_on_player_receive_fields(function(player, name, fields)
             local cost = get_copy_material_cost(meta);
             if can_afford(cost, meta) then
                 meta:set_int("paper",  meta:get_int("paper") - cost.paper);
-                meta:set_int("pigment", meta:get_int("paper") - cost.pigment);
+                meta:set_int("pigment", meta:get_int("pigment") - cost.pigment);
 
                 cartographer.map_sound("cartographer_write", player);