diff --git wp-admin/includes/meta-boxes.php wp-admin/includes/meta-boxes.php
index 2b0b286..559f1ce 100644
--- wp-admin/includes/meta-boxes.php
+++ wp-admin/includes/meta-boxes.php
@@ -38,7 +38,7 @@ function post_submit_meta_box($post) {
 <div id="preview-action">
 <?php
 if ( 'publish' == $post->post_status ) {
-	$preview_link = esc_url( get_permalink( $post->ID ) );
+	$preview_link = esc_url( apply_filters( 'preview_post_link', get_permalink( $post->ID ) ) );
 	$preview_button = __( 'Preview Changes' );
 } else {
 	$preview_link = set_url_scheme( get_permalink( $post->ID ) );