diff --git a/htdocs/core/actions_massactions.inc.php b/htdocs/core/actions_massactions.inc.php
index b3ad5754242..45af37a6c6a 100644
--- a/htdocs/core/actions_massactions.inc.php
+++ b/htdocs/core/actions_massactions.inc.php
@@ -1039,7 +1039,7 @@ if (!$error && $massaction == "builddoc" && $permissiontoread && !GETPOST('butto
 		$arrayofinclusion[] = '^'.preg_quote(dol_sanitizeFileName($tmppdf), '/').'\.pdf$';
 	}
 	foreach ($listofobjectref as $tmppdf) {
-		$arrayofinclusion[] = '^'.preg_quote(dol_sanitizeFileName($tmppdf), '/').'_[a-zA-Z0-9\-\_\']+\.pdf$'; // To include PDF generated from ODX files
+		$arrayofinclusion[] = '^'.preg_quote(dol_sanitizeFileName($tmppdf), '/').'_[a-zA-Z0-9\-\_\'\&\.]+\.pdf$'; // To include PDF generated from ODX files
 	}
 	$listoffiles = dol_dir_list($uploaddir, 'all', 1, implode('|', $arrayofinclusion), '\.meta$|\.png', 'date', SORT_DESC, 0, true);