diff --git a/lib/private/Group/Group.php b/lib/private/Group/Group.php
index d8d1a73762ded..57289a4d3acb7 100644
--- a/lib/private/Group/Group.php
+++ b/lib/private/Group/Group.php
@@ -184,9 +184,7 @@ public function addUser(IUser $user): void {
 		foreach ($this->backends as $backend) {
 			if ($backend->implementsActions(\OC\Group\Backend::ADD_TO_GROUP)) {
 				$backend->addToGroup($user->getUID(), $this->gid);
-				if ($this->users) {
-					$this->users[$user->getUID()] = $user;
-				}
+				$this->users[$user->getUID()] = $user;
 
 				$this->dispatcher->dispatchTyped(new UserAddedEvent($this, $user));