add_filter( 'import_upload_size_limit', 'fix_import_form_size' );
add_filter( 'upload_mimes', 'check_upload_mimes' );
add_filter( 'upload_size_limit', 'upload_size_limit_filter' );
+add_action( 'upload_ui_over_quota', 'multisite_over_quota_message' );
// Mail
add_action( 'phpmailer_init', 'fix_phpmailer_messageid' );
// WP_HOME and WP_SITEURL should not have any effect in MS
remove_filter( 'option_siteurl', '_config_wp_siteurl' );
remove_filter( 'option_home', '_config_wp_home' );
+
+// If the network upgrade hasn't run yet, assume ms-files.php rewriting is used.
+add_filter( 'default_site_option_ms_files_rewriting', '__return_true' );
\ No newline at end of file