diff --git a/file/lib/data/chat/room/ChatRoom.class.php b/file/lib/data/chat/room/ChatRoom.class.php
index ef189ef..de42c30 100644
--- a/file/lib/data/chat/room/ChatRoom.class.php
+++ b/file/lib/data/chat/room/ChatRoom.class.php
@@ -167,9 +167,9 @@ public function getUsers() {
 		$stmt = WCF::getDB()->prepareStatement($sql);
 		$stmt->execute(array('roomID', $this->roomID));
 		$userIDs = array();
-		while ($userIDs[] = $stmt->fetchColumn());
+		while ($userID = $stmt->fetchColumn()) $userIDs[] = $userID;
 		
-		if (!count($userIDs)) return array();
+		if (empty($userIDs)) return array();
 		
 		$sql = "SELECT
 				u.*,