diff --git a/wp-admin/includes/class-custom-background.php b/wp-admin/includes/class-custom-background.php
index 2eb3ccfd64..1d1cce73b8 100644
--- a/wp-admin/includes/class-custom-background.php
+++ b/wp-admin/includes/class-custom-background.php
@@ -42,8 +42,11 @@ class Custom_Background {
 	 * Constructor - Registers administration header callback.
 	 *
 	 * @since 3.0.0
-	 * @param callable $admin_header_callback
-	 * @param callable $admin_image_div_callback Optional custom image div output callback.
+	 *
+	 * @param callable $admin_header_callback    Optional. Administration header callback.
+	 *                                           Default empty string.
+	 * @param callable $admin_image_div_callback Optional. Custom image div output callback.
+	 *                                           Default empty string.
 	 */
 	public function __construct( $admin_header_callback = '', $admin_image_div_callback = '' ) {
 		$this->admin_header_callback    = $admin_header_callback;
diff --git a/wp-admin/includes/class-custom-image-header.php b/wp-admin/includes/class-custom-image-header.php
index ee3bcb12ec..a4b04bf3fc 100644
--- a/wp-admin/includes/class-custom-image-header.php
+++ b/wp-admin/includes/class-custom-image-header.php
@@ -47,11 +47,13 @@ class Custom_Image_Header {
 	private $updated;
 
 	/**
-	 * Constructor - Register administration header callback.
+	 * Constructor - Registers administration header callback.
 	 *
 	 * @since 2.1.0
-	 * @param callable $admin_header_callback
-	 * @param callable $admin_image_div_callback Optional custom image div output callback.
+	 *
+	 * @param callable $admin_header_callback    Administration header callback.
+	 * @param callable $admin_image_div_callback Optional. Custom image div output callback.
+	 *                                           Default empty string.
 	 */
 	public function __construct( $admin_header_callback, $admin_image_div_callback = '' ) {
 		$this->admin_header_callback    = $admin_header_callback;
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 3fab07e1ee..107b4d32ae 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.5-alpha-57163';
+$wp_version = '6.5-alpha-57169';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.