diff --git a/boot.php b/boot.php
index df7dc85608..40729a78c0 100644
--- a/boot.php
+++ b/boot.php
@@ -134,17 +134,6 @@ $netgroup_ids = [
  */
 define('MAX_LIKERS',    75);
 
-/**
- * @name Notify
- *
- * Email notification options
- * @{
- */
-
-define('NOTIFY_SYSTEM',   32768);
-/* @}*/
-
-
 /** @deprecated since 2019.03, use Term::UNKNOWN instead */
 define('TERM_UNKNOWN',   Term::UNKNOWN);
 /** @deprecated since 2019.03, use Term::HASHTAG instead */
diff --git a/include/enotify.php b/include/enotify.php
index 6d261720e5..96630ca3ec 100644
--- a/include/enotify.php
+++ b/include/enotify.php
@@ -375,7 +375,7 @@ function notification($params)
 		}
 	}
 
-	if ($params['type'] == NOTIFY_SYSTEM) {
+	if ($params['type'] == Notify\Type::SYSTEM) {
 		switch($params['event']) {
 			case "SYSTEM_REGISTER_REQUEST":
 				$itemlink =  $params['link'];
@@ -456,7 +456,7 @@ function notification($params)
 
 	// send email notification if notification preferences permit
 	if ((intval($params['notify_flags']) & intval($params['type']))
-		|| $params['type'] == NOTIFY_SYSTEM) {
+		|| $params['type'] == Notify\Type::SYSTEM) {
 
 		Logger::log('sending notification email');
 
diff --git a/src/Model/Notify/Type.php b/src/Model/Notify/Type.php
index f15c1b76a7..aae5fedc05 100644
--- a/src/Model/Notify/Type.php
+++ b/src/Model/Notify/Type.php
@@ -8,7 +8,7 @@ namespace Friendica\Model\Notify;
 class Type
 {
 	/** @var int Notification about a introduction */
-	const INTRO  = 1;
+	const INTRO = 1;
 	/** @var int Notification about a confirmed introduction */
 	const CONFIRM = 2;
 	/** @var int Notification about a post on your wall */
@@ -33,4 +33,7 @@ class Type
 	const POKE = 512;
 	/** @var int Notification about either a contact had posted something directly or the contact is a mentioned forum */
 	const SHARE = 1024;
+
+	/** @var int Global System notifications */
+	const SYSTEM = 32768;
 }
diff --git a/src/Module/Register.php b/src/Module/Register.php
index 98af06543d..8401a215a8 100644
--- a/src/Module/Register.php
+++ b/src/Module/Register.php
@@ -348,7 +348,7 @@ class Register extends BaseModule
 			// send notification to admins
 			while ($admin = DBA::fetch($admins_stmt)) {
 				\notification([
-					'type'         => NOTIFY_SYSTEM,
+					'type'         => Model\Notify\Type::SYSTEM,
 					'event'        => 'SYSTEM_REGISTER_REQUEST',
 					'source_name'  => $user['username'],
 					'source_mail'  => $user['email'],