diff --git a/wcfsetup/install/files/js/WCF.Message.js b/wcfsetup/install/files/js/WCF.Message.js
index 8b88bc9d36..8908cf6f58 100644
--- a/wcfsetup/install/files/js/WCF.Message.js
+++ b/wcfsetup/install/files/js/WCF.Message.js
@@ -212,6 +212,8 @@ else {
 
 /**
  * Prevents multiple submits of the same form by disabling the submit button.
+ * 
+ * @deprecated 6.2 Not (or no longer) used in the software.
  */
 WCF.Message.FormGuard = Class.extend({
 	/**