diff --git a/ethereal.lua b/ethereal.lua
index ebd4f98..29c7f5b 100644
--- a/ethereal.lua
+++ b/ethereal.lua
@@ -19,6 +19,6 @@ stripped_tree.register_trunk(mod_name,trunk_names)
 local axe_types = {
 "axe_crystal",
 }
-if not ENABLE_CHISEL then
+if not stripped_tree.ENABLE_CHISEL then
 stripped_tree.register_axes(mod_name,axe_types)
 end