diff --git a/lib/group/group.php b/lib/group/group.php
index c4ca7f1c0eb3090c52fce7ef1edfc462ea18ca4e..bb1537b5c66785b894bc75ae9093b96c3a87f04b 100644
--- a/lib/group/group.php
+++ b/lib/group/group.php
@@ -77,7 +77,7 @@ class Group {
 		foreach ($userIds as $userId) {
 			$user = $this->userManager->get($userId);
 			if(!is_null($user)) {
-				$users[$userId] = $user;
+				$users[] = $user;
 			}
 		}
 		$this->users = $users;