diff --git a/classes/feedenclosure.php b/classes/feedenclosure.php
index 2435f6854..b5f5cc411 100644
--- a/classes/feedenclosure.php
+++ b/classes/feedenclosure.php
@@ -1,10 +1,21 @@
 <?php
 class FeedEnclosure {
+	/** @var string */
 	public $link;
+
+	/** @var string */
 	public $type;
+
+	/** @var string */
 	public $length;
+
+	/** @var string */
 	public $title;
+
+	/** @var string */
 	public $height;
+
+	/** @var string */
 	public $width;
 }