diff --git src/wp-includes/customize/class-wp-customize-header-image-control.php b/class-wp-customize-header-image-control.php
index 68262dd..1764b8c 100755
--- src/wp-includes/customize/class-wp-customize-header-image-control.php
+++ b/class-wp-customize-header-image-control.php
@@ -15,8 +15,25 @@
  * @see WP_Customize_Image_Control
  */
 class WP_Customize_Header_Image_Control extends WP_Customize_Image_Control {
+	/**
+	 * Customize control type.
+	 *
+	 * @var string
+	 */
 	public $type = 'header';
+
+	/**
+	 * Uploaded header images.
+	 *
+	 * @var array
+	 */
 	public $uploaded_headers;
+	
+	/**
+	 * Default header images.
+	 *
+	 * @var array
+	 */
 	public $default_headers;
 
 	/**