diff --git a/htdocs/emailcollector/class/emailcollectorfilter.class.php b/htdocs/emailcollector/class/emailcollectorfilter.class.php
index 010948a79f8..0cc5208ac13 100644
--- a/htdocs/emailcollector/class/emailcollectorfilter.class.php
+++ b/htdocs/emailcollector/class/emailcollectorfilter.class.php
@@ -99,8 +99,8 @@ class EmailCollectorFilter extends CommonObject
 	public $rulevalue;
 
 	/**
-	 * @var int		Date of creation
-	 */
+     * @var integer|string date_creation
+     */
 	public $date_creation;