diff --git a/dungeon.lua b/dungeon.lua
index eb16936..f3e61c6 100644
--- a/dungeon.lua
+++ b/dungeon.lua
@@ -269,7 +269,7 @@ newnode.on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
 		for i = 1, 100 do
 			for j = 1, 5 * depth do
 				for _, tre in pairs(treasures) do
-					if tre.name and tre.level and tre.rarity and tre.level <= level and math.random(tre.rarity) == 1 then
+					if tre.name and tre.level and tre.rarity and tre.level <= level and math.random(tre.rarity) == 1 and inv:room_for_item('main', tre.name) then
 						inv:add_item('main', tre.name)
 						something = true
 					end