diff --git a/htdocs/public/members/new.php b/htdocs/public/members/new.php
index a92958ad834..558417fe8cb 100644
--- a/htdocs/public/members/new.php
+++ b/htdocs/public/members/new.php
@@ -144,13 +144,14 @@ if ($_POST["action"] == 'add')
 		$adh->email       = $_POST["email"];
 		$adh->login       = $login;
 		$adh->pass        = $_POST["pass1"];
-		$adh->naiss       = $_POST["naiss"];
 		$adh->photo       = $_POST["photo"];
 		$adh->note        = $_POST["note"];
 		$adh->pays        = $_POST["pays"];
 		$adh->typeid      = $_POST["type"];
 		$adh->note        = $_POST["comment"];
 		$adh->morphy      = $_POST["morphy"];
+        if (preg_match('/-/',$_POST["naiss"])) $adh->naiss = dol_stringtotime($_POST["naiss"],1);
+		else $adh->naiss = $_POST["naiss"];
 
 		foreach($_POST as $key => $value){
 			if (preg_match("/^options_/",$key)){