diff --git a/wp-activate.php b/wp-activate.php
index 7fee70a843..e892a8c015 100644
--- a/wp-activate.php
+++ b/wp-activate.php
@@ -7,7 +7,7 @@ require( dirname(__FILE__) . '/wp-load.php' );
 require( './wp-blog-header.php' );
 
 if ( !is_multisite() ) {
-	wp_redirect( get_option( 'siteurl' ) . "/wp-login.php?action=register" );
+	wp_redirect( site_url( '/wp-login.php?action=register' ) );
 	die();
 }