diff --git a/src/psm/Module/Install/Controller/InstallController.class.php b/src/psm/Module/Install/Controller/InstallController.class.php
index 47b66ad8..6a49f957 100644
--- a/src/psm/Module/Install/Controller/InstallController.class.php
+++ b/src/psm/Module/Install/Controller/InstallController.class.php
@@ -211,6 +211,7 @@ class InstallController extends AbstractController {
 			'pushover_key' => '',
 			'pushover_device' => '',
 			'pushsafer_key' => '',
+			'pushsafer_device' => '',
 		);
 
 		$validator = new \psm\Util\User\UserValidator($this->user);