diff --git a/src/wp-admin/install.php b/src/wp-admin/install.php
index 4ee27d6100..4a38eab1cd 100644
--- a/src/wp-admin/install.php
+++ b/src/wp-admin/install.php
@@ -229,7 +229,6 @@ if ( is_blog_installed() ) {
  * @global string $wp_version
  * @global string $required_php_version
  * @global string $required_mysql_version
- * @global wpdb   $wpdb
  */
 global $wp_version, $required_php_version, $required_mysql_version;
 
diff --git a/src/wp-admin/upgrade.php b/src/wp-admin/upgrade.php
index ebafb5cc8c..330ef0fd9d 100644
--- a/src/wp-admin/upgrade.php
+++ b/src/wp-admin/upgrade.php
@@ -40,7 +40,6 @@ if ( 'upgrade_db' === $step ) {
  * @global string $wp_version
  * @global string $required_php_version
  * @global string $required_mysql_version
- * @global wpdb   $wpdb
  */
 global $wp_version, $required_php_version, $required_mysql_version;