diff --git a/src/wp-includes/class-wp-editor.php b/src/wp-includes/class-wp-editor.php
index b3c21fc17a..c721c49306 100644
--- a/src/wp-includes/class-wp-editor.php
+++ b/src/wp-includes/class-wp-editor.php
@@ -819,6 +819,7 @@ final class _WP_Editors {
 			'Blockquote' => __( 'Blockquote' ),
 			'Div' => _x( 'Div', 'HTML tag' ),
 			'Pre' => _x( 'Pre', 'HTML tag' ),
+			'Preformatted' => _x( 'Preformatted', 'HTML tag' ),
 			'Address' => _x( 'Address', 'HTML tag' ),
 
 			'Inline' => _x( 'Inline', 'HTML elements' ),