diff --git a/src/WebSockets/Channels/ChannelManager.php b/src/WebSockets/Channels/ChannelManager.php
index cb67e7d..b43ce41 100644
--- a/src/WebSockets/Channels/ChannelManager.php
+++ b/src/WebSockets/Channels/ChannelManager.php
@@ -6,12 +6,12 @@ use Ratchet\ConnectionInterface;
 
 class ChannelManager
 {
-    /** @var array */
-    protected $channels = [];
-
     /** @var string */
     protected $appId;
 
+    /** @var array */
+    protected $channels = [];
+
     public function findOrCreate(string $appId, string $channelId): Channel
     {
         if (!isset($this->channels[$appId][$channelId])) {