diff --git a/src/wp-includes/load.php b/src/wp-includes/load.php
index 241398387f..63a4b0f64c 100644
--- a/src/wp-includes/load.php
+++ b/src/wp-includes/load.php
@@ -470,6 +470,8 @@ function wp_using_ext_object_cache( $using = null ) {
  *
  * @since 3.0.0
  * @access private
+ *
+ * @global array $wp_filter Stores all of the filters.
  */
 function wp_start_object_cache() {
 	global $wp_filter;