diff --git a/mapgen.lua b/mapgen.lua
index e7f8454..8dba21d 100644
--- a/mapgen.lua
+++ b/mapgen.lua
@@ -248,7 +248,7 @@ minetest.register_ore({
 
 
 -- Generate strati
-local dbuf --for mapgen
+local dbuf = {} --for mapgen
 local function generate_strati(minp, maxp, seed)
 
 	local t1 = os.clock()