--- modules/filter/filter.module	2010-11-15 23:40:14.397622670 +0100
+++ modules/filter/filter.module.origin	2010-11-15 23:40:08.618812380 +0100
@@ -1219,7 +1219,7 @@
 function filter_xss_bad_protocol($string, $decode = TRUE) {
   static $allowed_protocols;
   if (!isset($allowed_protocols)) {
-    $allowed_protocols = array_flip(variable_get('filter_allowed_protocols', array('http', 'https', 'ftp', 'news', 'nntp', 'telnet', 'mailto', 'irc', 'ssh', 'sftp', 'webcal', 'rtsp', 'internal')));
+    $allowed_protocols = array_flip(variable_get('filter_allowed_protocols', array('http', 'https', 'ftp', 'news', 'nntp', 'telnet', 'mailto', 'irc', 'ssh', 'sftp', 'webcal', 'rtsp')));
   }
 
   // Get the plain text representation of the attribute value (i.e. its meaning).