--- loncom/interface/loncss.pm	2010/08/31 15:07:19	1.8
+++ loncom/interface/loncss.pm	2011/05/27 21:53:41	1.9
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # gerenates a lon-capa CSS response
 #
-# $Id: loncss.pm,v 1.8 2010/08/31 15:07:19 raeburn Exp $
+# $Id: loncss.pm,v 1.9 2011/05/27 21:53:41 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -47,7 +47,8 @@ sub handler {
     $r->content_type('text/css');
     my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time+86400));
     $r->header_out("Expires" => $date);
-    $r->header_out->add("Cache-Control" =>  "public, no-transform");
+    $r->header_out("Cache-Control" =>  "public, no-transform");
+    $r->send_http_header;
     
     my $handle = &Apache::lonnet::check_for_valid_session($r);
     if ($handle ne '' ) {