diff --git a/ext_localconf.php b/ext_localconf.php
index 2b8d4bd..021cf84 100644
--- a/ext_localconf.php
+++ b/ext_localconf.php
@@ -7,4 +7,4 @@
  * LICENSE.md file that was distributed with this source code.
  */
 
-defined('TYPO3_MODE') || die();
+defined('TYPO3') || die();