diff --git a/scripts/lib/upt.lua b/scripts/lib/upt.lua
index aaf3cf6..214177b 100644
--- a/scripts/lib/upt.lua
+++ b/scripts/lib/upt.lua
@@ -6,7 +6,7 @@ local url_parser = require "net.url"
 
 local _M = {}
 
-function host(s)
+function _M.host(s)
     return (s.."/"):match("://(.-)/")
 end