diff --git a/classes/ObjectModel.php b/classes/ObjectModel.php
index 0b58e3480..facdb09f4 100644
--- a/classes/ObjectModel.php
+++ b/classes/ObjectModel.php
@@ -450,6 +450,7 @@ abstract class ObjectModelCore
 			$this->date_upd = date('Y-m-d H:i:s');
 
 		// Database insertion
+		unset($this->id);
 		if (!$result = ObjectModel::$db->insert($this->def['table'], $this->getFields(), $null_values))
 			return false;