diff --git a/phpBB/install/startup.php b/phpBB/install/startup.php
index 0180996a19..0f2b1a60a0 100644
--- a/phpBB/install/startup.php
+++ b/phpBB/install/startup.php
@@ -159,7 +159,7 @@ function installer_shutdown_function($display_errors)
 		installer_class_loader($phpbb_root_path, $phpEx);
 		$supported_error_levels = E_ALL & ~E_NOTICE & ~E_DEPRECATED & ~E_USER_DEPRECATED;
 
-		$cache = new \phpbb\cache\driver\file(__DIR__ . '/../cache/installer');
+		$cache = new \phpbb\cache\driver\file(__DIR__ . '/../cache/installer/');
 		$filesystem = new \phpbb\filesystem\filesystem();
 		if (strpos($error['file'], $filesystem->realpath($cache->cache_dir)) !== false && is_writable($cache->cache_dir))
 		{