diff --git a/src/wp-includes/pluggable.php b/src/wp-includes/pluggable.php
index 4fe656a965..270812ce42 100644
--- a/src/wp-includes/pluggable.php
+++ b/src/wp-includes/pluggable.php
@@ -1005,6 +1005,11 @@ if ( ! function_exists( 'auth_redirect' ) ) :
 	/**
 	 * Checks if a user is logged in, if not it redirects them to the login page.
 	 *
+	 * When this code is called from a page, it checks to see if the user viewing the page is logged in.
+	 * If the user is not logged in, they are redirected to the login page. The user is redirected
+	 * in such a way that, upon logging in, they will be sent directly to the page they were originally
+	 * trying to access.
+	 *
 	 * @since 1.5.0
 	 */
 	function auth_redirect() {