Index: wp-includes/update.php
===================================================================
--- wp-includes/update.php	(revision 21081)
+++ wp-includes/update.php	(working copy)
@@ -57,7 +57,8 @@
 		$wp_install = network_site_url( );
 		$multisite_enabled = 1;
 	} else {
-		$user_count = count_users( );
+		$users = count_users( );
+		$user_count = $users['total_users'];
 		$multisite_enabled = 0;
 		$num_blogs = 1;
 		$wp_install = home_url( '/' );
@@ -70,7 +71,7 @@
 		'mysql'             => $mysql_version,
 		'local_package'     => isset( $wp_local_package ) ? $wp_local_package : '',
 		'blogs'             => $num_blogs,
-		'users'             => $user_count['total_users'],
+		'users'             => $user_count,
 		'multisite_enabled' => $multisite_enabled
 	);