diff --git a/npcf/npcf.lua b/npcf/npcf.lua
index caadbc0..774024a 100644
--- a/npcf/npcf.lua
+++ b/npcf/npcf.lua
@@ -26,7 +26,7 @@ if input then
 	io.close(input)
 else
 	local dir = string.gsub(NPCF_DATADIR, "/", package.config:sub(1,1))
-	os.execute("mkdir "..NPCF_DATADIR)
+	os.execute("mkdir "..dir)
 	local output = io.open(NPCF_DATADIR.."/index.txt", 'w')
 	if output then
 		output:write(minetest.serialize(index))