Index: themes.php
===================================================================
--- themes.php	(revision 15799)
+++ themes.php	(working copy)
@@ -54,7 +54,7 @@
 
 require_once('./admin-header.php');
 if ( is_multisite() && current_user_can('edit_themes') ) {
-	?><div id="message0" class="updated"><p><?php printf( __('Administrator: new themes must be activated in the <a href="%s">Network Themes</a> screen before they appear here.'), admin_url( 'ms-themes.php') ); ?></p></div><?php
+	?><div id="message0" class="updated"><p><?php printf( __('Administrator: new themes must be activated in the <a href="%s">Network Themes</a> screen before they appear here.'), network_admin_url( 'themes.php') ); ?></p></div><?php
 }
 ?>