diff --git a/ajax/plugins/do_plugin_install.php b/ajax/plugins/do_plugin_install.php
index 08bf8a40..010cc535 100755
--- a/ajax/plugins/do_plugin_install.php
+++ b/ajax/plugins/do_plugin_install.php
@@ -1,6 +1,7 @@
 <?php
 
 require '../../includes/csrf.php';
+require_once '../../includes/session.php';
 require_once '../../includes/config.php';
 require_once '../../src/RaspAP/Auth/HTTPAuth.php';
 require_once '../../includes/authenticate.php';