diff --git a/proxy/http/server.go b/proxy/http/server.go
index f956438c..2999a40e 100755
--- a/proxy/http/server.go
+++ b/proxy/http/server.go
@@ -111,7 +111,7 @@ Start:
 	if len(s.config.Accounts) > 0 {
 		user, pass, ok := parseBasicAuth(request.Header.Get("Proxy-Authorization"))
 		if !ok || !s.config.HasAccount(user, pass) {
-			return common.Error2(conn.Write([]byte("HTTP/1.1 407 Proxy Authentication Required\r\nProxy-Authenticate: Basic realm=\"proxy\"\r\n\r\n")))
+			return common.Error2(conn.Write([]byte("HTTP/1.1 407 Proxy Authentication Required\r\nProxy-Authenticate: Basic realm=\"proxy\"\r\nConnection: close\r\n\r\n")))
 		}
 		if inbound != nil {
 			inbound.User.Email = user