diff --git a/program/lib/washtml.php b/program/lib/washtml.php
index efd525df3..01b0488fc 100644
--- a/program/lib/washtml.php
+++ b/program/lib/washtml.php
@@ -171,7 +171,7 @@ class washtml
       $key = strtolower($key);
       $value = $node->getAttribute($key);
       if(isset($this->_html_attribs[$key]) ||
-         ($key == 'href' && preg_match('/^(http|https|ftp|mailto):.+/i', $value)))
+         ($key == 'href' && preg_match('/^(http:|https:|ftp:|mailto:|#).+/i', $value)))
         $t .= ' ' . $key . '="' . htmlspecialchars($value, ENT_QUOTES) . '"';
       else if($key == 'style' && ($style = $this->wash_style($value)))
         $t .= ' style="' . $style . '"';