diff --git a/bottles.lua b/bottles.lua
index 0bcecc5..6565d07 100644
--- a/bottles.lua
+++ b/bottles.lua
@@ -4,7 +4,6 @@ minetest.register_node("magical_potion:medicine_small", {
 	tiles = {"medicine_bottle_small.png"},
 	wield_image = "medicine_bottle_small.png",
 	paramtype = "light",
-	stack_max = 1,
 	is_ground_content = false,
 	walkable = false,
     light_source = 14,
@@ -32,7 +31,6 @@ minetest.register_node("magical_potion:medicine_big", {
 	tiles = {"medicine_bottle_big.png"},
 	wield_image = "medicine_bottle_big.png",
 	paramtype = "light",
-	stack_max = 1,
 	is_ground_content = false,
 	walkable = false,
     light_source = 14,
@@ -60,7 +58,6 @@ minetest.register_node("magical_potion:medicine_huge", {
 	tiles = {"medicine_bottle_huge.png"},
 	wield_image = "medicine_bottle_huge.png",
 	paramtype = "light",
-	stack_max = 1,
 	is_ground_content = false,
 	walkable = false,
     light_source = 14,
@@ -88,7 +85,6 @@ minetest.register_node("magical_potion:fly_small", {
 	tiles = {"fly_bottle_small.png"},
 	wield_image = "fly_bottle_small.png",
 	paramtype = "light",
-	stack_max = 1,
 	is_ground_content = false,
 	walkable = false,
     light_source = 14,
@@ -115,7 +111,6 @@ minetest.register_node("magical_potion:fly_big", {
 	tiles = {"fly_bottle_big.png"},
 	wield_image = "fly_bottle_big.png",
 	paramtype = "light",
-	stack_max = 1,
 	is_ground_content = false,
 	walkable = false,
     light_source = 14,
@@ -142,7 +137,6 @@ minetest.register_node("magical_potion:fly_huge", {
 	tiles = {"fly_bottle_huge.png"},
 	wield_image = "fly_bottle_huge.png",
 	paramtype = "light",
-	stack_max = 1,
 	is_ground_content = false,
 	walkable = false,
     light_source = 14,
@@ -169,7 +163,6 @@ minetest.register_node("magical_potion:speed", {
 	tiles = {"speed_bottle.png"},
 	wield_image = "speed_bottle.png",
 	paramtype = "light",
-	stack_max = 1,
 	is_ground_content = false,
 	walkable = false,
     light_source = 14,