diff --git a/mods/ITEMS/mcl_potions/init.lua b/mods/ITEMS/mcl_potions/init.lua
index 495a484ec..944778525 100644
--- a/mods/ITEMS/mcl_potions/init.lua
+++ b/mods/ITEMS/mcl_potions/init.lua
@@ -103,7 +103,7 @@ local function give_to_cauldron (pos, node, itemstack, placer, substance)
 	if fit > 0 then
 		-- sufficiently low level, add; old contents are lost.
 		local newnode = mcl_cauldrons.fill_levels(node, mcl_cauldrons.BOTTLEFUL, substance)
-		if node ~= new_node then
+		if node ~= newnode then
 			-- change happened
 			minetest.set_node(pos, newnode)
 			minetest.sound_play("mcl_potions_bottle_pour", {pos=pos, gain=0.5, max_hear_range=16}, true)