--- loncom/interface/coursecatalog.pm	2018/12/16 03:17:07	1.97
+++ loncom/interface/coursecatalog.pm	2018/12/27 20:10:31	1.98
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler for displaying the course catalog interface
 #
-# $Id: coursecatalog.pm,v 1.97 2018/12/16 03:17:07 raeburn Exp $
+# $Id: coursecatalog.pm,v 1.98 2018/12/27 20:10:31 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -192,7 +192,9 @@ sub handler {
                                 if ($courseinfo{$codedom.'_'.$cnum}{'showsyllabus'}) {
                                     my $usehttp = 0;
                                     if (($ENV{'SERVER_PORT'} == 443) && ($courseinfo{$codedom.'_'.$cnum}{'extsyllplain'})) {
-                                        $usehttp = 1;
+                                        unless (&Apache::lonnet::uses_sts()) {
+                                            $usehttp = 1;
+                                        }
                                     }
                                     $r->print('&nbsp;<font size="-2">'.
                                               '<a href="javascript:ToSyllabus('."'$codedom','$cnum','$usehttp'".')">'.
@@ -1678,7 +1680,9 @@ sub courseinfo_row {
     if ($showsyllabus) {
         my $usehttp = 0;
         if (($ENV{'SERVER_PORT'} == 443) && ($extsyllplain)) {
-            $usehttp = 1;
+            unless (&Apache::lonnet::uses_sts()) {
+                $usehttp = 1;
+            }
         }
         $output .= '<a href="javascript:ToSyllabus('."'$cdom','$cnum','$usehttp'".')">'.&mt('Syllabus').'</a>';
     } else {