Index: src/wp-activate.php
===================================================================
--- src/wp-activate.php	(revision 53687)
+++ src/wp-activate.php	(working copy)
@@ -11,7 +11,7 @@
 /** Sets up the WordPress Environment. */
 require __DIR__ . '/wp-load.php';
 
-require __DIR__ . '/wp-blog-header.php';
+require ABSPATH . WPINC . '/template-loader.php';
 
 if ( ! is_multisite() ) {
 	wp_redirect( wp_registration_url() );
@@ -68,9 +68,6 @@
 	$wp_object_cache->cache_enabled = false;
 }
 
-// Fix for page title.
-$wp_query->is_404 = false;
-
 /**
  * Fires before the Site Activation page is loaded.
  *
Index: src/wp-signup.php
===================================================================
--- src/wp-signup.php	(revision 53687)
+++ src/wp-signup.php	(working copy)
@@ -5,7 +5,7 @@
 
 add_filter( 'wp_robots', 'wp_robots_no_robots' );
 
-require __DIR__ . '/wp-blog-header.php';
+require ABSPATH . WPINC . '/template-loader.php';
 
 nocache_headers();
 
@@ -39,9 +39,6 @@
 	die();
 }
 
-// Fix for page title.
-$wp_query->is_404 = false;
-
 /**
  * Fires before the Site Sign-up page is loaded.
  *