diff --git a/book.php b/book.php
index cb6eca4..3cc8e65 100644
--- a/book.php
+++ b/book.php
@@ -261,7 +261,7 @@ class Book extends Base {
         if (!is_null ($se) && $withSerie) {
             $addition = $addition . "<strong>" . localize("content.series") . "</strong>" . str_format (localize ("content.series.data"), $this->seriesIndex, htmlspecialchars ($se->name)) . "<br />\n";
         }
-        if (preg_match ("/<\/(div|p|a)>/", $this->comment))
+        if (preg_match ("/<\/(div|p|a|span)>/", $this->comment))
         {
             return $addition . html2xhtml ($this->comment);
         }