diff --git a/settings/Activity/GroupProvider.php b/settings/Activity/GroupProvider.php
index 866cb08366..ac547f07f8 100644
--- a/settings/Activity/GroupProvider.php
+++ b/settings/Activity/GroupProvider.php
@@ -37,8 +37,8 @@ use OCP\L10N\IFactory as L10nFactory;
 
 class GroupProvider implements IProvider {
 
-	public const ADDED_TO_GROUP = 'group_added';
-	public const REMOVED_FROM_GROUP = 'group_removed';
+	const ADDED_TO_GROUP = 'group_added';
+	const REMOVED_FROM_GROUP = 'group_removed';
 
 	/** @var L10nFactory */
 	private $l10n;
@@ -132,7 +132,7 @@ class GroupProvider implements IProvider {
 	 * @param array $parameters
 	 * @throws \InvalidArgumentException
 	 */
-	protected function setSubjects(IEvent $event, string $subject, array $parameters): void {
+	protected function setSubjects(IEvent $event, string $subject, array $parameters) {
 		$placeholders = $replacements = [];
 		foreach ($parameters as $placeholder => $parameter) {
 			$placeholders[] = '{' . $placeholder . '}';
diff --git a/settings/Application.php b/settings/Application.php
index ff776b4227..e6efdf1d26 100644
--- a/settings/Application.php
+++ b/settings/Application.php
@@ -44,7 +44,6 @@ use OCP\AppFramework\App;
 use OCP\Defaults;
 use OCP\IContainer;
 use OCP\IGroup;
-use OCP\ILogger;
 use OCP\IUser;
 use OCP\Settings\IManager;
 use OCP\Util;
@@ -136,14 +135,14 @@ class Application extends App {
 		Util::connectHook('\OCP\Config', 'js', $this, 'extendJsConfig');
 	}
 
-	public function addUserToGroup(IGroup $group, IUser $user): void {
+	public function addUserToGroup(IGroup $group, IUser $user) {
 		/** @var Hooks $hooks */
 		$hooks = $this->getContainer()->query(Hooks::class);
 		$hooks->addUserToGroup($group, $user);
 		
 	}
 
-	public function removeUserFromGroup(IGroup $group, IUser $user): void {
+	public function removeUserFromGroup(IGroup $group, IUser $user) {
 		/** @var Hooks $hooks */
 		$hooks = $this->getContainer()->query(Hooks::class);
 		$hooks->removeUserFromGroup($group, $user);
diff --git a/settings/Hooks.php b/settings/Hooks.php
index 49189ca082..3a75ff7141 100644
--- a/settings/Hooks.php
+++ b/settings/Hooks.php
@@ -224,7 +224,7 @@ class Hooks {
 	 * @throws \InvalidArgumentException
 	 * @throws \BadMethodCallException
 	 */
-	public function addUserToGroup(IGroup $group, IUser $user): void {
+	public function addUserToGroup(IGroup $group, IUser $user) {
 		$subAdminManager = $this->groupManager->getSubAdmin();
 		$usersToNotify = $subAdminManager->getGroupsSubAdmins($group);
 		$usersToNotify[] = $user;
@@ -261,7 +261,7 @@ class Hooks {
 	 * @throws \InvalidArgumentException
 	 * @throws \BadMethodCallException
 	 */
-	public function removeUserFromGroup(IGroup $group, IUser $user): void {
+	public function removeUserFromGroup(IGroup $group, IUser $user) {
 		$subAdminManager = $this->groupManager->getSubAdmin();
 		$usersToNotify = $subAdminManager->getGroupsSubAdmins($group);
 		$usersToNotify[] = $user;