--- loncom/lontrans.pm	2018/04/21 20:34:44	1.22
+++ loncom/lontrans.pm	2018/05/08 15:31:22	1.23
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # URL translation for User Files
 #
-# $Id: lontrans.pm,v 1.22 2018/04/21 20:34:44 raeburn Exp $
+# $Id: lontrans.pm,v 1.23 2018/05/08 15:31:22 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -91,7 +91,10 @@ sub handler {
                                         }
                                     }
                                     my $host = $r->headers_in->get('Host');
-                                    if ($host) {
+                                    if ($r->is_initial_req() || !$host) {
+                                        $r->internal_redirect($realuri);
+                                        return OK;
+                                    } else {
                                         my $protocol = 'http';
                                         if ($r->get_server_port == 443) {
                                             $protocol = 'https';