diff --git a/models/states/MessageUserJoined.php b/models/states/MessageUserJoined.php
index c76acee..66adfee 100644
--- a/models/states/MessageUserJoined.php
+++ b/models/states/MessageUserJoined.php
@@ -19,12 +19,12 @@ class MessageUserJoined extends AbstractMessageState
     /**
      * The default value for the 'enableMessageUserJoined' setting.
      */
-    const DEFAULT_ENABLE_MESSAGE_USER_JOINED = true;
+    public const DEFAULT_ENABLE_MESSAGE_USER_JOINED = true;
 
     /**
      * The key for the 'enableMessageUserJoined' setting.
      */
-    const SETTING_ENABLE_MESSAGE_USER_JOINED = 'enableMessageUserJoined';
+    public const SETTING_ENABLE_MESSAGE_USER_JOINED = 'enableMessageUserJoined';
 
     /**
      * @inheritdoc
diff --git a/models/states/MessageUserLeft.php b/models/states/MessageUserLeft.php
index f58cfed..f431813 100644
--- a/models/states/MessageUserLeft.php
+++ b/models/states/MessageUserLeft.php
@@ -19,12 +19,12 @@ class MessageUserLeft extends AbstractMessageState
     /**
      * The default value for the 'enableMessageUserLeft' setting.
      */
-    const DEFAULT_ENABLE_MESSAGE_USER_LEFT = true;
+    public const DEFAULT_ENABLE_MESSAGE_USER_LEFT = true;
 
     /**
      * The key for the 'enableMessageUserLeft' setting.
      */
-    const SETTING_ENABLE_MESSAGE_USER_LEFT = 'enableMessageUserLeft';
+    public const SETTING_ENABLE_MESSAGE_USER_LEFT = 'enableMessageUserLeft';
 
     /**
      * @inheritdoc