diff --git a/mods/bg_tree/grow_leaves.lua b/mods/bg_tree/grow_leaves.lua
index ff98c5e..14d1d96 100644
--- a/mods/bg_tree/grow_leaves.lua
+++ b/mods/bg_tree/grow_leaves.lua
@@ -1,14 +1,10 @@
 local modname = minetest.get_current_modname()
-local api = blockgame.tree
-local vec = blockgame.vector
 
 -- NODE NAMES
 
-local log = modname .. ":log"
 local log_alive = modname .. ":log_alive"
 local leaves = modname .. ":leaves"
 local leaves_alive = modname .. ":leaves_alive"
-local root = modname .. ":root"
 
 -- END OF NODE NAMES