diff --git a/src/Model/Group.php b/src/Model/Group.php
index cb8de042f6..58c59268e7 100644
--- a/src/Model/Group.php
+++ b/src/Model/Group.php
@@ -556,7 +556,7 @@ class Group
 	 *
 	 * @param integer $id Contact ID
 	 */
-	public static function UpdateMembersForForum(int $id)
+	public static function updateMembersForForum(int $id)
 	{
 		Logger::info('Update forum members', ['id' => $id]);
 
diff --git a/src/Worker/Notifier.php b/src/Worker/Notifier.php
index df71fd01d8..abd5613dd0 100644
--- a/src/Worker/Notifier.php
+++ b/src/Worker/Notifier.php
@@ -733,7 +733,7 @@ class Notifier
 		foreach (Tag::getByURIId($target_item['uri-id'], [Tag::EXCLUSIVE_MENTION]) as $tag) {
 			$target_contact = Contact::getByURL(Strings::normaliseLink($tag['url']), null, [], $uid);
 			if (($target_contact['contact-type'] == Contact::TYPE_COMMUNITY) && $target_contact['manually-approve']) {
-				Group::UpdateMembersForForum($target_contact['id']);
+				Group::updateMembersForForum($target_contact['id']);
 			}
 		}