diff --git a/classes/Tab.php b/classes/Tab.php
index 19d839031..542d68c7f 100644
--- a/classes/Tab.php
+++ b/classes/Tab.php
@@ -140,7 +140,11 @@ class TabCore extends ObjectModel
 	public function delete()
 	{
 	 	if (Db::getInstance()->execute('DELETE FROM '._DB_PREFIX_.'access WHERE `id_tab` = '.(int)$this->id) && parent::delete())
+		{
+			if (is_array(self::$_getIdFromClassName) && isset(self::$_getIdFromClassName[strtolower($this->class_name)]))
+				unset(self::$_getIdFromClassName[strtolower($this->class_name)]);
 			return $this->cleanPositions($this->id_parent);
+		}
 		return false;
 	}