diff --git a/htdocs/knowledgemanagement/knowledgerecord_list.php b/htdocs/knowledgemanagement/knowledgerecord_list.php
index 0e8f3a12514..9f399bf0976 100644
--- a/htdocs/knowledgemanagement/knowledgerecord_list.php
+++ b/htdocs/knowledgemanagement/knowledgerecord_list.php
@@ -371,7 +371,7 @@ $param .= $hookmanager->resPrint;
 
 // List of mass actions available
 $arrayofmassactions = array(
-	//'validate'=>$langs->trans("Validate"),
+	'validate'=>$langs->trans("Validate"),
 	//'generate_doc'=>$langs->trans("ReGeneratePDF"),
 	//'builddoc'=>$langs->trans("PDFMerge"),
 	//'presend'=>$langs->trans("SendByMail"),