--- linkchecker/linkchecker.module.orig	2009-03-25 16:01:00.000000000 -0700
+++ linkchecker/linkchecker.module	2009-03-31 17:08:19.000000000 -0700
@@ -1167,7 +1167,7 @@ function _linkchecker_extract_links($tex
   $ret = $matches[5];
   for ($i=0; isset($ret[$i]); $i++) {
     // Full qualified URLs.
-    if (valid_url($ret[$i], TRUE)) {
+    if (valid_url($ret[$i], TRUE) || preg_match('/^\w[\w.+]*:/', $ret[$i])) {
       // Add to Array and change HTML links into plain text links.
       $links[] = decode_entities($ret[$i]);
     }