diff --git a/wp-settings.php b/wp-settings.php
index 4048ae6734..f96343807d 100644
--- a/wp-settings.php
+++ b/wp-settings.php
@@ -12,8 +12,10 @@ function wp_unregister_GLOBALS() {
 
 	$input = array_merge($_GET, $_POST, $_COOKIE, $_SERVER, $_ENV, $_FILES, isset($_SESSION) && is_array($_SESSION) ? $_SESSION : array());
 	foreach ( $input as $k => $v ) 
-		if ( !in_array($k, $noUnset) && isset($GLOBALS[$k]) )
+		if ( !in_array($k, $noUnset) && isset($GLOBALS[$k]) ) {
+			$GLOBALS[$k] = NULL;
 			unset($GLOBALS[$k]);
+		}
 }
 
 wp_unregister_GLOBALS();