diff --git a/src/wp-admin/update-core.php b/src/wp-admin/update-core.php
index 8949f39e33..f1a8530a22 100644
--- a/src/wp-admin/update-core.php
+++ b/src/wp-admin/update-core.php
@@ -242,13 +242,8 @@ function dismissed_updates() {
  * Display upgrade WordPress for downloading latest or upgrading automatically form.
  *
  * @since 2.7.0
- *
- * @global string $required_php_version   The required PHP version string.
- * @global string $required_mysql_version The required MySQL version string.
  */
 function core_upgrade_preamble() {
-	global $required_php_version, $required_mysql_version;
-
 	$updates = get_core_updates();
 
 	// Include an unmodified $wp_version.