diff --git a/opac/opac-shelves.pl b/opac/opac-shelves.pl
index e2ac9aafc8..180d0d2701 100755
--- a/opac/opac-shelves.pl
+++ b/opac/opac-shelves.pl
@@ -433,4 +433,5 @@ $template->param(
     listsview => 1,
 );
 
-output_html_with_http_headers $query, $cookie, $template->output;
+my $content_type = $query->param('rss')? 'rss' : 'html';
+output_with_http_headers $query, $cookie, $template->output, $content_type;