diff --git a/tests/phpunit/includes/install.php b/tests/phpunit/includes/install.php
index 38db3ce..5d4d568 100644
--- a/tests/phpunit/includes/install.php
+++ b/tests/phpunit/includes/install.php
@@ -22,6 +22,7 @@ tests_reset__SERVER();
 
 $PHP_SELF = $GLOBALS['PHP_SELF'] = $_SERVER['PHP_SELF'] = '/index.php';
 
+define( 'WP_REPAIRING', true );
 require_once ABSPATH . '/wp-settings.php';
 
 require_once ABSPATH . '/wp-admin/includes/upgrade.php';