diff --git a/src/wp-admin/includes/template.php b/src/wp-admin/includes/template.php
index b89a899d55..57dd7c2fcd 100644
--- a/src/wp-admin/includes/template.php
+++ b/src/wp-admin/includes/template.php
@@ -1099,7 +1099,7 @@ function do_meta_boxes( $screen, $context, $object ) {
 
 	$hidden = get_hidden_meta_boxes( $screen );
 
-	printf( '<div id="%s-sortables" class="meta-box-sortables">', htmlspecialchars( $context ) );
+	printf( '<div id="%s-sortables" class="meta-box-sortables">', esc_attr( $context ) );
 
 	// Grab the ones the user has manually sorted. Pull them out of their previous context/priority and into the one the user chose
 	if ( ! $already_sorted && $sorted = get_user_option( "meta-box-order_$page" ) ) {