diff --git a/lib/compat/wordpress-6.8/class-gutenberg-rest-post-types-controller-6-8.php b/lib/compat/wordpress-6.8/class-gutenberg-rest-post-types-controller-6-8.php
index 1309472b80024..003bbe0ef9c48 100644
--- a/lib/compat/wordpress-6.8/class-gutenberg-rest-post-types-controller-6-8.php
+++ b/lib/compat/wordpress-6.8/class-gutenberg-rest-post-types-controller-6-8.php
@@ -13,29 +13,33 @@
  * @return void
  */
 function gutenberg_editor_rendering_mode_field() {
-	register_rest_field( 'type', 'default_rendering_mode', array(
-		'get_callback' => static function( $object ) {
-			$post_type_object = get_post_type_object( $object['slug'] );
+	register_rest_field(
+		'type',
+		'default_rendering_mode',
+		array(
+			'get_callback' => static function ( $object ) {
+				$post_type_object = get_post_type_object( $object['slug'] );
 
-			// Property will only exist if the post type supports the block editor.
-			if ( ! $post_type_object || ! isset( $post_type_object->default_rendering_mode ) ) {
-				return '';
-			}
+				// Property will only exist if the post type supports the block editor.
+				if ( ! $post_type_object || ! isset( $post_type_object->default_rendering_mode ) ) {
+					return 'post-only';
+				}
 
-			// Validate the filtered rendering mode.
-			if ( ! in_array( $post_type_object->default_rendering_mode, gutenberg_post_type_rendering_modes(), true ) ) {
-				return 'post-only';
-			}
+				// Validate the filtered rendering mode.
+				if ( ! in_array( $post_type_object->default_rendering_mode, gutenberg_post_type_rendering_modes(), true ) ) {
+					return 'post-only';
+				}
 
-			return $post_type_object->default_rendering_mode;
-		},
-		'schema' => array(
-			'description' => __( 'The rendering mode for the editor.', 'gutenberg' ),
-			'type'        => 'string',
-			'enum'        => array( 'post-only', 'template-locked' ),
-			'context'     => array( 'edit' ),
-			'readonly'    => true,
-		),
-	) );
+				return $post_type_object->default_rendering_mode;
+			},
+			'schema'       => array(
+				'description' => __( 'The rendering mode for the editor.', 'gutenberg' ),
+				'type'        => 'string',
+				'enum'        => array( 'post-only', 'template-locked' ),
+				'context'     => array( 'edit' ),
+				'readonly'    => true,
+			),
+		)
+	);
 }
 add_action( 'rest_api_init', 'gutenberg_editor_rendering_mode_field' );