--- a/wiki.pl
+++ b/wiki.pl
@@ -893,7 +893,7 @@ sub GetRcRss {
   my $ChannelAbout = &QuoteHtml($FullUrl . &ScriptLinkChar()
                                 . $ENV{QUERY_STRING});
   $rssHeader = <<RSS ;
-<?xml version="1.0" encoding="ISO-8859-1"?>
+<?xml version="1.0" encoding="$HttpCharset"?>
 <rdf:RDF
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns="http://purl.org/rss/1.0/"
