diff --git a/init.lua b/init.lua
index 068bba0..1666e45 100644
--- a/init.lua
+++ b/init.lua
@@ -43,6 +43,8 @@ local function find_air(pos,player)
 	local top_node = minetest.get_node(top)
  	while mid_node.name ~= "air" or mid_node.name ~= "ignore" and top_node.name ~= "air" or top_node.name ~= "ignore" do
  		pos.y = pos.y +2
+		mid_node = minetest.get_node(mid)
+		top_node = minetest.get_node(top)
  	end
  	minetest.chat_send_player(sender, "Result: " .. mid)