diff --git wp-admin/includes/template.php wp-admin/includes/template.php
index 95a3bf9..7f432c0 100644
--- wp-admin/includes/template.php
+++ wp-admin/includes/template.php
@@ -895,31 +895,40 @@ function wp_import_upload_form( $action ) {
  *
  * @since 2.5.0
  *
- * @param string           $id            String for use in the 'id' attribute of tags.
- * @param string           $title         Title of the meta box.
- * @param callback         $callback      Function that fills the box with the desired content.
- *                                        The function should echo its output.
- * @param string|WP_Screen $screen        Optional. The screen on which to show the box (like a post
- *                                        type, 'link', or 'comment'). Default is the current screen.
- * @param string           $context       Optional. The context within the screen where the boxes
- *                                        should display. Available contexts vary from screen to
- *                                        screen. Post edit screen contexts include 'normal', 'side',
- *                                        and 'advanced'. Comments screen contexts include 'normal'
- *                                        and 'side'. Menus meta boxes (accordion sections) all use
- *                                        the 'side' context. Global default is 'advanced'.
- * @param string           $priority      Optional. The priority within the context where the boxes
- *                                        should show ('high', 'low'). Default 'default'.
- * @param array            $callback_args Optional. Data that should be set as the $args property
- *                                        of the box array (which is the second parameter passed
- *                                        to your callback). Default null.
+ * @param string           			$id            	String for use in the 'id' attribute of tags.
+ * @param string           			$title         	Title of the meta box.
+ * @param callback         			$callback      	Function that fills the box with the desired content.
+ *                                           		The function should echo its output.
+ * @param string|WP_Screen|array 	$screen        	Optional. The screen on which to show the box (like a post
+ *                                               	type, 'link', or 'comment'). Default is the current screen.
+ * @param string           			$context       	Optional. The context within the screen where the boxes
+ *                                        			should display. Available contexts vary from screen to
+ *                                        			screen. Post edit screen contexts include 'normal', 'side',
+ *                                       			and 'advanced'. Comments screen contexts include 'normal'
+ *                                       			and 'side'. Menus meta boxes (accordion sections) all use
+ *                                       			the 'side' context. Global default is 'advanced'.
+ * @param string           			$priority      	Optional. The priority within the context where the boxes
+ *                                           		should show ('high', 'low'). Default 'default'.
+ * @param array            			$callback_args 	Optional. Data that should be set as the $args property
+ *                                           		of the box array (which is the second parameter passed
+ *                                        		   	to your callback). Default null.
  */
 function add_meta_box( $id, $title, $callback, $screen = null, $context = 'advanced', $priority = 'default', $callback_args = null ) {
 	global $wp_meta_boxes;
 
-	if ( empty( $screen ) )
+	if ( empty( $screen ) ){
 		$screen = get_current_screen();
-	elseif ( is_string( $screen ) )
+	}elseif ( is_string( $screen ) ){
 		$screen = convert_to_screen( $screen );
+	}elseif ( is_array( $screen ) ){
+		foreach ( $screen as $single_screen ){
+			add_meta_box( $id, $title, $callback, $single_screen, $context, $priority, $callback_args );
+		}
+	}
+
+	if( !isset( $screen->id ) ){
+		return;
+	}
 
 	$page = $screen->id;