diff --git a/callbacks.lua b/callbacks.lua
index 4f9913c..53601b0 100644
--- a/callbacks.lua
+++ b/callbacks.lua
@@ -133,7 +133,7 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 			if unified_inventory.is_creative(player_name) then
 				local inv = player:get_inventory()
 				local stack = ItemStack(clicked_item)
-				stack:set_count(99)
+				stack:set_count(stack:get_stack_max())
 				if inv:room_for_item("main", stack) then
 					inv:add_item("main", stack)
 				end