diff --git a/src/http.lua b/src/http.lua
index 1d0eb50..d5457f6 100644
--- a/src/http.lua
+++ b/src/http.lua
@@ -209,8 +209,7 @@ end
 
 local function adjustheaders(reqt)
     -- default headers
-    local host = reqt.host
-    if reqt.port then host = host .. ":" .. reqt.port end
+    local host = string.gsub(reqt.authority, "^.-@", "")
     local lower = {
         ["user-agent"] = _M.USERAGENT,
         ["host"] = host,
@@ -353,4 +352,4 @@ _M.request = socket.protect(function(reqt, body)
     else return trequest(reqt) end
 end)
 
-return _M
\ No newline at end of file
+return _M