diff --git wp-admin/comment.php wp-admin/comment.php
index de5483e..a0a85b8 100644
--- wp-admin/comment.php
+++ wp-admin/comment.php
@@ -191,7 +191,7 @@ if ( $comment->comment_approved != '0' ) { // if not unapproved
 </tr>
 </table>
 
-<?php wp_nonce_field( $nonce_action ); ?>
+<?php wp_nonce_field( $nonce_action, $nonce_action ); ?>
 <input type='hidden' name='action' value='<?php echo esc_attr($formaction); ?>' />
 <input type='hidden' name='c' value='<?php echo esc_attr($comment->comment_ID); ?>' />
 <input type='hidden' name='noredir' value='1' />
@@ -274,7 +274,7 @@ case 'editedcomment' :
 	$comment_id = absint( $_POST['comment_ID'] );
 	$comment_post_id = absint( $_POST['comment_post_ID'] );
 
-	check_admin_referer( 'update-comment_' . $comment_id );
+	check_admin_referer( 'update-comment_' . $comment_id, '_wpnonce-update-comment' );
 
 	edit_comment();
 
diff --git wp-admin/custom-background.php wp-admin/custom-background.php
index a924eca..acee451 100644
--- wp-admin/custom-background.php
+++ wp-admin/custom-background.php
@@ -328,7 +328,7 @@ if ( current_theme_supports( 'custom-background', 'default-color' ) )
 </tbody>
 </table>
 
-<?php wp_nonce_field('custom-background'); ?>
+<?php wp_nonce_field( 'custom-background', '_wpnonce-custom-background-save-options' ); ?>
 <?php submit_button( null, 'primary', 'save-background-options' ); ?>
 </form>
 
diff --git wp-admin/custom-header.php wp-admin/custom-header.php
index 14f01df..0650bd6 100644
--- wp-admin/custom-header.php
+++ wp-admin/custom-header.php
@@ -149,7 +149,7 @@ class Custom_Image_Header {
 		$step = (int) $_GET['step'];
 		if ( $step < 1 || 3 < $step ||
 			( 2 == $step && ! wp_verify_nonce( $_REQUEST['_wpnonce-custom-header-upload'], 'custom-header-upload' ) ) ||
-			( 3 == $step && ! wp_verify_nonce( $_REQUEST['_wpnonce'], 'custom-header-crop-image' ) )
+			( 3 == $step && ! wp_verify_nonce( $_REQUEST['_wpnonce-custom-header-crop-image'], 'custom-header-crop-image' ) )
 		)
 			return 1;
 
@@ -726,7 +726,7 @@ wp_nonce_field( 'custom-header-options', '_wpnonce-custom-header-options' ); ?>
 	<?php if ( empty( $_POST ) && isset( $_GET['file'] ) ) { ?>
 	<input type="hidden" name="create-new-attachment" value="true" />
 	<?php } ?>
-	<?php wp_nonce_field( 'custom-header-crop-image' ) ?>
+	<?php wp_nonce_field( 'custom-header-crop-image', '_wpnonce-custom-header-crop-image' ) ?>
 
 	<p class="submit">
 	<?php submit_button( __( 'Crop and Publish' ), 'primary', 'submit', false ); ?>
@@ -784,7 +784,7 @@ wp_nonce_field( 'custom-header-options', '_wpnonce-custom-header-options' ); ?>
 	 * @since 2.1.0
 	 */
 	function step_3() {
-		check_admin_referer( 'custom-header-crop-image' );
+		check_admin_referer( 'custom-header-crop-image', '_wpnonce-custom-header-crop-image' );
 
 		if ( ! current_theme_supports( 'custom-header', 'uploads' ) )
 			wp_die( __( 'Cheatin&#8217; uh?' ) );
diff --git wp-admin/edit-comments.php wp-admin/edit-comments.php
index 174cd9a..afd8b76 100644
--- wp-admin/edit-comments.php
+++ wp-admin/edit-comments.php
@@ -17,7 +17,7 @@ $pagenum = $wp_list_table->get_pagenum();
 $doaction = $wp_list_table->current_action();
 
 if ( $doaction ) {
-	check_admin_referer( 'bulk-comments' );
+	check_admin_referer( 'bulk-comments', '_wpnonce-bulk-comments' );
 
 	if ( 'delete_all' == $doaction && !empty( $_REQUEST['pagegen_timestamp'] ) ) {
 		$comment_status = $wpdb->escape( $_REQUEST['comment_status'] );
diff --git wp-admin/edit-form-advanced.php wp-admin/edit-form-advanced.php
index 7d142d9..c5706fe 100644
--- wp-admin/edit-form-advanced.php
+++ wp-admin/edit-form-advanced.php
@@ -297,7 +297,7 @@ if ( isset( $post_new_file ) && current_user_can( $post_type_object->cap->create
 <div id="message" class="updated"><p><?php echo $message; ?></p></div>
 <?php endif; ?>
 <form name="post" action="post.php" method="post" id="post"<?php do_action('post_edit_form_tag'); ?>>
-<?php wp_nonce_field($nonce_action); ?>
+<?php wp_nonce_field( $nonce_action, 'edit_form_advanced_nonce' ); ?>
 <input type="hidden" id="user-id" name="user_ID" value="<?php echo (int) $user_ID ?>" />
 <input type="hidden" id="hiddenaction" name="action" value="<?php echo esc_attr( $form_action ) ?>" />
 <input type="hidden" id="originalaction" name="originalaction" value="<?php echo esc_attr( $form_action ) ?>" />
diff --git wp-admin/edit-form-comment.php wp-admin/edit-form-comment.php
index 14a2966..fb7f00a 100644
--- wp-admin/edit-form-comment.php
+++ wp-admin/edit-form-comment.php
@@ -11,7 +11,7 @@ if ( !defined('ABSPATH') )
 	die('-1');
 ?>
 <form name="post" action="comment.php" method="post" id="post">
-<?php wp_nonce_field('update-comment_' . $comment->comment_ID) ?>
+<?php wp_nonce_field( 'update-comment_' . $comment->comment_ID, '_wpnonce-update-comment') ?>
 <div class="wrap">
 <?php screen_icon(); ?>
 <h2><?php _e('Edit Comment'); ?></h2>
diff --git wp-admin/edit-link-form.php wp-admin/edit-link-form.php
index 6d81ec0..143aa10 100644
--- wp-admin/edit-link-form.php
+++ wp-admin/edit-link-form.php
@@ -71,7 +71,7 @@ if ( !empty($form) )
 if ( !empty($link_added) )
 	echo $link_added;
 
-wp_nonce_field( $nonce_action );
+wp_nonce_field( $nonce_action, '_wpnonce-edit-link' );
 wp_nonce_field( 'closedpostboxes', 'closedpostboxesnonce', false );
 wp_nonce_field( 'meta-box-order', 'meta-box-order-nonce', false ); ?>
 
diff --git wp-admin/edit-tag-form.php wp-admin/edit-tag-form.php
index 034642a..53c4c9e 100644
--- wp-admin/edit-tag-form.php
+++ wp-admin/edit-tag-form.php
@@ -34,7 +34,7 @@ do_action($taxonomy . '_pre_edit_form', $tag, $taxonomy); ?>
 <input type="hidden" name="action" value="editedtag" />
 <input type="hidden" name="tag_ID" value="<?php echo esc_attr($tag->term_id) ?>" />
 <input type="hidden" name="taxonomy" value="<?php echo esc_attr($taxonomy) ?>" />
-<?php wp_original_referer_field(true, 'previous'); wp_nonce_field('update-tag_' . $tag_ID); ?>
+<?php wp_original_referer_field( true, 'previous' ); wp_nonce_field( 'update-tag_' . $tag_ID, '_wpnonce-edit-tag' ); ?>
 	<table class="form-table">
 		<tr class="form-field form-required">
 			<th scope="row" valign="top"><label for="name"><?php _ex('Name', 'Taxonomy Name'); ?></label></th>
diff --git wp-admin/edit-tags.php wp-admin/edit-tags.php
index 7250a66..efb08d7 100644
--- wp-admin/edit-tags.php
+++ wp-admin/edit-tags.php
@@ -94,7 +94,7 @@ case 'delete':
 break;
 
 case 'bulk-delete':
-	check_admin_referer( 'bulk-tags' );
+	check_admin_referer( 'bulk-tags', '_wpnonce-bulk-tags' );
 
 	if ( !current_user_can( $tax->cap->delete_terms ) )
 		wp_die( __( 'Cheatin&#8217; uh?' ) );
@@ -133,7 +133,7 @@ break;
 
 case 'editedtag':
 	$tag_ID = (int) $_POST['tag_ID'];
-	check_admin_referer( 'update-tag_' . $tag_ID );
+	check_admin_referer( 'update-tag_' . $tag_ID, '_wpnonce-edit-tag' );
 
 	if ( !current_user_can( $tax->cap->edit_terms ) )
 		wp_die( __( 'Cheatin&#8217; uh?' ) );
diff --git wp-admin/edit.php wp-admin/edit.php
index 9eae3cf..b430cb7 100644
--- wp-admin/edit.php
+++ wp-admin/edit.php
@@ -46,7 +46,7 @@ if ( 'post' != $post_type ) {
 $doaction = $wp_list_table->current_action();
 
 if ( $doaction ) {
-	check_admin_referer('bulk-posts');
+	check_admin_referer( 'bulk-posts', '_wpnonce-bulk-posts' );
 
 	$sendback = remove_query_arg( array('trashed', 'untrashed', 'deleted', 'ids'), wp_get_referer() );
 	if ( ! $sendback )
diff --git wp-admin/includes/class-wp-list-table.php wp-admin/includes/class-wp-list-table.php
index 8a22bd4..33fb1b2 100644
--- wp-admin/includes/class-wp-list-table.php
+++ wp-admin/includes/class-wp-list-table.php
@@ -759,8 +759,10 @@ class WP_List_Table {
 	 * @access protected
 	 */
 	function display_tablenav( $which ) {
-		if ( 'top' == $which )
-			wp_nonce_field( 'bulk-' . $this->_args['plural'] );
+		if ( 'top' == $which ) {
+			$nonce_action = 'bulk-' . $this->_args['plural'];
+			wp_nonce_field( $nonce_action, '_wpnonce-' . $nonce_action );
+		}
 ?>
 	<div class="tablenav <?php echo esc_attr( $which ); ?>">
 
diff --git wp-admin/includes/dashboard.php wp-admin/includes/dashboard.php
index 0df8109..0b9a6b7 100644
--- wp-admin/includes/dashboard.php
+++ wp-admin/includes/dashboard.php
@@ -557,7 +557,7 @@ function wp_dashboard_quick_press() {
 			<input type="hidden" name="action" id="quickpost-action" value="post-quickpress-save" />
 			<input type="hidden" name="post_ID" value="<?php echo $post_ID; ?>" />
 			<input type="hidden" name="post_type" value="post" />
-			<?php wp_nonce_field('add-post'); ?>
+			<?php wp_nonce_field( 'add-post', '_wpnonce-add-post' ); ?>
 			<?php submit_button( __( 'Save Draft' ), 'button', 'save', false, array( 'id' => 'save-post' ) ); ?>
 			<input type="reset" value="<?php esc_attr_e( 'Reset' ); ?>" class="button" />
 			<br class="clear" />
diff --git wp-admin/link-manager.php wp-admin/link-manager.php
index 92194f0..6e4e136 100644
--- wp-admin/link-manager.php
+++ wp-admin/link-manager.php
@@ -17,7 +17,7 @@ $wp_list_table = _get_list_table('WP_Links_List_Table');
 $doaction = $wp_list_table->current_action();
 
 if ( $doaction && isset( $_REQUEST['linkcheck'] ) ) {
-	check_admin_referer( 'bulk-bookmarks' );
+	check_admin_referer( 'bulk-bookmarks', '_wpnonce-bulk-bookmarks' );
 
 	if ( 'delete' == $doaction ) {
 		$bulklinks = (array) $_REQUEST['linkcheck'];
diff --git wp-admin/link.php wp-admin/link.php
index d12d229..bffce01 100644
--- wp-admin/link.php
+++ wp-admin/link.php
@@ -28,7 +28,7 @@ $this_file = admin_url('link-manager.php');
 
 switch ($action) {
 	case 'deletebookmarks' :
-		check_admin_referer('bulk-bookmarks');
+		check_admin_referer( 'bulk-bookmarks', '_wpnonce-bulk-bookmarks' );
 
 		//for each link id (in $linkcheck[]) change category to selected value
 		if (count($linkcheck) == 0) {
@@ -49,7 +49,7 @@ switch ($action) {
 		break;
 
 	case 'move' :
-		check_admin_referer('bulk-bookmarks');
+		check_admin_referer( 'bulk-bookmarks', '_wpnonce-bulk-bookmarks' );
 
 		//for each link id (in $linkcheck[]) change category to selected value
 		if (count($linkcheck) == 0) {
@@ -65,7 +65,7 @@ switch ($action) {
 		break;
 
 	case 'add' :
-		check_admin_referer('add-bookmark');
+		check_admin_referer( 'add-bookmark', '_wpnonce-edit-link' );
 
 		$redir = wp_get_referer();
 		if ( add_link() )
@@ -77,7 +77,7 @@ switch ($action) {
 
 	case 'save' :
 		$link_id = (int) $_POST['link_id'];
-		check_admin_referer('update-bookmark_' . $link_id);
+		check_admin_referer( 'update-bookmark_' . $link_id, '_wpnonce-edit-link' );
 
 		edit_link($link_id);
 
diff --git wp-admin/network/site-themes.php wp-admin/network/site-themes.php
index b47a0c6..db3e719 100644
--- wp-admin/network/site-themes.php
+++ wp-admin/network/site-themes.php
@@ -83,7 +83,7 @@ if ( $action ) {
 				unset( $allowed_themes[$theme] );
 			break;
 		case 'enable-selected':
-			check_admin_referer( 'bulk-themes' );
+			check_admin_referer( 'bulk-themes', '_wpnonce-bulk-themes' );
 			if ( isset( $_POST['checked'] ) ) {
 				$themes = (array) $_POST['checked'];
 				$action = 'enabled';
@@ -96,7 +96,7 @@ if ( $action ) {
 			}
 			break;
 		case 'disable-selected':
-			check_admin_referer( 'bulk-themes' );
+			check_admin_referer( 'bulk-themes', '_wpnonce-bulk-themes' );
 			if ( isset( $_POST['checked'] ) ) {
 				$themes = (array) $_POST['checked'];
 				$action = 'disabled';
diff --git wp-admin/network/site-users.php wp-admin/network/site-users.php
index 2064a76..522403a 100644
--- wp-admin/network/site-users.php
+++ wp-admin/network/site-users.php
@@ -104,7 +104,7 @@ if ( $action ) {
 		case 'remove':
 			if ( ! current_user_can( 'remove_users' )  )
 				die(__('You can&#8217;t remove users.'));
-			check_admin_referer( 'bulk-users' );
+			check_admin_referer( 'bulk-users', '_wpnonce-bulk-users' );
 
 			$update = 'remove';
 			if ( isset( $_REQUEST['users'] ) ) {
@@ -122,7 +122,7 @@ if ( $action ) {
 			break;
 
 		case 'promote':
-			check_admin_referer( 'bulk-users' );
+			check_admin_referer( 'bulk-users', '_wpnonce-bulk-users' );
 			$editable_roles = get_editable_roles();
 			if ( empty( $editable_roles[$_REQUEST['new_role']] ) )
 				wp_die(__('You can&#8217;t give users that role.'));
diff --git wp-admin/network/themes.php wp-admin/network/themes.php
index 04840ee..f76e6e4 100644
--- wp-admin/network/themes.php
+++ wp-admin/network/themes.php
@@ -49,7 +49,7 @@ if ( $action ) {
 			exit;
 			break;
 		case 'enable-selected':
-			check_admin_referer('bulk-themes');
+			check_admin_referer( 'bulk-themes', '_wpnonce-bulk-themes' );
 			$themes = isset( $_POST['checked'] ) ? (array) $_POST['checked'] : array();
 			if ( empty($themes) ) {
 				wp_safe_redirect( add_query_arg( 'error', 'none', $referer ) );
@@ -62,7 +62,7 @@ if ( $action ) {
 			exit;
 			break;
 		case 'disable-selected':
-			check_admin_referer('bulk-themes');
+			check_admin_referer( 'bulk-themes', '_wpnonce-bulk-themes' );
 			$themes = isset( $_POST['checked'] ) ? (array) $_POST['checked'] : array();
 			if ( empty($themes) ) {
 				wp_safe_redirect( add_query_arg( 'error', 'none', $referer ) );
@@ -75,7 +75,7 @@ if ( $action ) {
 			exit;
 			break;
 		case 'update-selected' :
-			check_admin_referer( 'bulk-themes' );
+			check_admin_referer( 'bulk-themes', '_wpnonce-bulk-themes' );
 
 			if ( isset( $_GET['themes'] ) )
 				$themes = explode( ',', $_GET['themes'] );
@@ -104,7 +104,7 @@ if ( $action ) {
 		case 'delete-selected':
 			if ( ! current_user_can( 'delete_themes' ) )
 				wp_die( __('You do not have sufficient permissions to delete themes for this site.') );
-			check_admin_referer( 'bulk-themes' );
+			check_admin_referer( 'bulk-themes', '_wpnonce-bulk-themes' );
 
 			$themes = isset( $_REQUEST['checked'] ) ? (array) $_REQUEST['checked'] : array();
 
diff --git wp-admin/network/users.php wp-admin/network/users.php
index 1318355..85f1448 100644
--- wp-admin/network/users.php
+++ wp-admin/network/users.php
@@ -117,7 +117,7 @@ if ( isset( $_GET['action'] ) ) {
 				wp_die( __( 'You do not have permission to access this page.' ) );
 
 			if ( ( isset( $_POST['action']) || isset($_POST['action2'] ) ) && isset( $_POST['allusers'] ) ) {
-				check_admin_referer( 'bulk-users-network' );
+				check_admin_referer( 'bulk-users-network', '_wpnonce-bulk-users-network' );
 
 				$doaction = $_POST['action'] != -1 ? $_POST['action'] : $_POST['action2'];
 				$userfunction = '';
diff --git wp-admin/plugins.php wp-admin/plugins.php
index 7fc3036..e81fe92 100644
--- wp-admin/plugins.php
+++ wp-admin/plugins.php
@@ -65,7 +65,7 @@ if ( $action ) {
 			if ( ! current_user_can('activate_plugins') )
 				wp_die(__('You do not have sufficient permissions to activate plugins for this site.'));
 
-			check_admin_referer('bulk-plugins');
+			check_admin_referer( 'bulk-plugins', '_wpnonce-bulk-plugins' );
 
 			$plugins = isset( $_POST['checked'] ) ? (array) $_POST['checked'] : array();
 
@@ -101,7 +101,7 @@ if ( $action ) {
 			break;
 		case 'update-selected' :
 
-			check_admin_referer( 'bulk-plugins' );
+			check_admin_referer( 'bulk-plugins', '_wpnonce-bulk-plugins' );
 
 			if ( isset( $_GET['plugins'] ) )
 				$plugins = explode( ',', $_GET['plugins'] );
@@ -174,7 +174,7 @@ if ( $action ) {
 			if ( ! current_user_can('activate_plugins') )
 				wp_die(__('You do not have sufficient permissions to deactivate plugins for this site.'));
 
-			check_admin_referer('bulk-plugins');
+			check_admin_referer( 'bulk-plugins', '_wpnonce-bulk-plugins' );
 
 			$plugins = isset( $_POST['checked'] ) ? (array) $_POST['checked'] : array();
 			// Do not deactivate plugins which are already deactivated.
@@ -205,7 +205,7 @@ if ( $action ) {
 			if ( ! current_user_can('delete_plugins') )
 				wp_die(__('You do not have sufficient permissions to delete plugins for this site.'));
 
-			check_admin_referer('bulk-plugins');
+			check_admin_referer( 'bulk-plugins', '_wpnonce-bulk-plugins' );
 
 			//$_POST = from the plugin form; $_GET = from the FTP details screen.
 			$plugins = isset( $_REQUEST['checked'] ) ? (array) $_REQUEST['checked'] : array();
diff --git wp-admin/post.php wp-admin/post.php
index c638c18..f777bfd 100644
--- wp-admin/post.php
+++ wp-admin/post.php
@@ -100,7 +100,7 @@ case 'postajaxpost':
 case 'post':
 case 'post-quickpress-publish':
 case 'post-quickpress-save':
-	check_admin_referer('add-' . $post_type);
+	check_admin_referer( 'add-' . $post_type, '_wpnonce-add-' . $post_type );
 
 	if ( 'post-quickpress-publish' == $action )
 		$_POST['publish'] = 'publish'; // tell write_post() to publish
diff --git wp-admin/update.php wp-admin/update.php
index 687142e..822c6c7 100644
--- wp-admin/update.php
+++ wp-admin/update.php
@@ -23,7 +23,7 @@ if ( isset($_GET['action']) ) {
 		if ( ! current_user_can( 'update_plugins' ) )
 			wp_die( __( 'You do not have sufficient permissions to update plugins for this site.' ) );
 
-		check_admin_referer( 'bulk-update-plugins' );
+		check_admin_referer( 'bulk-update-plugins', '_wpnonce-bulk-update-plugins' );
 
 		if ( isset( $_GET['plugins'] ) )
 			$plugins = explode( ',', stripslashes($_GET['plugins']) );
@@ -170,7 +170,7 @@ if ( isset($_GET['action']) ) {
 		if ( ! current_user_can( 'update_themes' ) )
 			wp_die( __( 'You do not have sufficient permissions to update themes for this site.' ) );
 
-		check_admin_referer( 'bulk-update-themes' );
+		check_admin_referer( 'bulk-update-themes', '_wpnonce-bulk-update-themes' );
 
 		if ( isset( $_GET['themes'] ) )
 			$themes = explode( ',', stripslashes($_GET['themes']) );
diff --git wp-admin/upload.php wp-admin/upload.php
index 7d50d52..a05af95 100644
--- wp-admin/upload.php
+++ wp-admin/upload.php
@@ -19,7 +19,7 @@ $pagenum = $wp_list_table->get_pagenum();
 $doaction = $wp_list_table->current_action();
 
 if ( $doaction ) {
-	check_admin_referer('bulk-media');
+	check_admin_referer( 'bulk-media', '_wpnonce-bulk-media' );
 
 	if ( 'delete_all' == $doaction ) {
 		$post_ids = $wpdb->get_col( "SELECT ID FROM $wpdb->posts WHERE post_type='attachment' AND post_status = 'trash'" );
diff --git wp-admin/users.php wp-admin/users.php
index 6ea1765..b9db4b9 100644
--- wp-admin/users.php
+++ wp-admin/users.php
@@ -95,7 +95,7 @@ switch ( $wp_list_table->current_action() ) {
 
 /* Bulk Dropdown menu Role changes */
 case 'promote':
-	check_admin_referer('bulk-users');
+	check_admin_referer( 'bulk-users', '_wpnonce-bulk-users' );
 
 	if ( ! current_user_can( 'promote_users' ) )
 		wp_die( __( 'You can&#8217;t edit that user.' ) );
@@ -191,7 +191,7 @@ case 'delete':
 	if ( is_multisite() )
 		wp_die( __('User deletion is not allowed from this screen.') );
 
-	check_admin_referer('bulk-users');
+	check_admin_referer( 'bulk-users', '_wpnonce-bulk-users' );
 
 	if ( empty($_REQUEST['users']) && empty($_REQUEST['user']) ) {
 		wp_redirect($redirect);
@@ -295,7 +295,7 @@ break;
 
 case 'remove':
 
-	check_admin_referer('bulk-users');
+	check_admin_referer( 'bulk-users', '_wpnonce-bulk-users' );
 
 	if ( ! is_multisite() )
 		wp_die( __( 'You can&#8217;t remove users.' ) );
diff --git wp-includes/functions.php wp-includes/functions.php
index a41d32f..8fda660 100644
--- wp-includes/functions.php
+++ wp-includes/functions.php
@@ -1191,6 +1191,9 @@ function wp_nonce_url( $actionurl, $action = -1 ) {
  * @return string Nonce field.
  */
 function wp_nonce_field( $action = -1, $name = "_wpnonce", $referer = true , $echo = true ) {
+	if ( 1 >= func_num_args() )
+		_doing_it_wrong( __METHOD__, __( 'The action and name parameters are now required.' ), '3.6' );
+
 	$name = esc_attr( $name );
 	$nonce_field = '<input type="hidden" id="' . $name . '" name="' . $name . '" value="' . wp_create_nonce( $action ) . '" />';
 
diff --git wp-includes/js/autosave.js wp-includes/js/autosave.js
index 3920d36..9077f67 100644
--- wp-includes/js/autosave.js
+++ wp-includes/js/autosave.js
@@ -61,7 +61,7 @@ jQuery(document).ready( function($) {
 			async: false,
 			data: {
 				action: 'wp-remove-post-lock',
-				_wpnonce: $('#_wpnonce').val(),
+				_wpnonce: $('input[name="edit_form_advanced_nonce"]').val(),
 				post_ID: $('#post_ID').val(),
 				active_post_lock: $('#active_post_lock').val()
 			}