require( ABSPATH . WPINC . '/capabilities.php' );
require( ABSPATH . WPINC . '/query.php' );
require( ABSPATH . WPINC . '/theme.php' );
-require( ABSPATH . WPINC . '/class-wp-theme.php' );
-require( ABSPATH . WPINC . '/template.php' );
+Utils\maybe_require( ABSPATH . WPINC . '/class-wp-theme.php' );
+Utils\maybe_require( ABSPATH . WPINC . '/template.php' );
require( ABSPATH . WPINC . '/user.php' );
require( ABSPATH . WPINC . '/meta.php' );
require( ABSPATH . WPINC . '/general-template.php' );