--- a/mod_http_upload/mod_http_upload.lua	Sun Jan 29 18:12:43 2017 +0100
+++ b/mod_http_upload/mod_http_upload.lua	Sun Jan 29 19:14:47 2017 +0100
@@ -19,7 +19,7 @@
 local s_upper = string.upper;
 
 local function join_path(...)
-	table.concat({ ... }, package.config:sub(1,1));
+	return table.concat({ ... }, package.config:sub(1,1));
 end
 
 -- config