diff --git a/src/wp-includes/class-wp-simplepie-file.php b/src/wp-includes/class-wp-simplepie-file.php
index 1c2630ae6c..83cc324863 100644
--- a/src/wp-includes/class-wp-simplepie-file.php
+++ b/src/wp-includes/class-wp-simplepie-file.php
@@ -19,6 +19,13 @@
  */
 class WP_SimplePie_File extends SimplePie_File {
 
+	/**
+	 * Timeout.
+	 *
+	 * @var int How long the connection should stay open in seconds.
+	 */
+	public $timeout = 10;
+
 	/**
 	 * Constructor.
 	 *