diff --git a/htdocs/ticketsup/class/ticketsup.class.php b/htdocs/ticketsup/class/ticketsup.class.php
index 0e8e7e71574..f1f23b09dcd 100644
--- a/htdocs/ticketsup/class/ticketsup.class.php
+++ b/htdocs/ticketsup/class/ticketsup.class.php
@@ -341,8 +341,8 @@ class Ticketsup extends CommonObject
             $sql .= " " . (!isset($this->fk_soc) ? '0' : "'" . $this->db->escape($this->fk_soc) . "'") . ",";
             $sql .= " " . (!isset($this->fk_project) ? '0' : "'" . $this->db->escape($this->fk_project) . "'") . ",";
             $sql .= " " . (!isset($this->origin_email) ? 'NULL' : "'" . $this->db->escape($this->origin_email) . "'") . ",";
-            $sql .= " " . ($this->fk_user_create > 0 ? ($user->id > 0 ? $user->id : 'NULL') : $this->fk_user_create) . ",";
-            $sql .= " " . ($this->fk_user_assign > 0 ? 'NULL' : $this->fk_user_assign) . ",";
+            $sql .= " " . ($this->fk_user_create > 0 ? $this->fk_user_create : ($user->id > 0 ? $user->id : 'NULL')) . ",";
+            $sql .= " " . ($this->fk_user_assign > 0 ? $this->fk_user_assign : 'NULL') . ",";
             $sql .= " " . (!isset($this->subject) ? 'NULL' : "'" . $this->db->escape($this->subject) . "'") . ",";
             $sql .= " " . (!isset($this->message) ? 'NULL' : "'" . $this->db->escape($this->message) . "'") . ",";
             $sql .= " " . (!isset($this->fk_statut) ? '0' : "'" . $this->db->escape($this->fk_statut) . "'") . ",";