diff --git a/wp-content/themes/twentyten/functions.php b/wp-content/themes/twentyten/functions.php
index 47e4c8c6ae..eee1d6258c 100644
--- a/wp-content/themes/twentyten/functions.php
+++ b/wp-content/themes/twentyten/functions.php
@@ -200,7 +200,7 @@ if ( ! function_exists( 'twentyten_admin_header_style' ) ) :
  */
 function twentyten_admin_header_style() {
 ?>
-<style type="text/css" id="twentyten-header-css">
+<style type="text/css" id="twentyten-admin-header-css">
 /* Shows the same border as on front end */
 #headimg {
 	border-bottom: 1px solid #000;