diff --git a/phpBB/includes/compatibility_globals.php b/phpBB/includes/compatibility_globals.php
index 2636f3223b..0f403896a7 100644
--- a/phpBB/includes/compatibility_globals.php
+++ b/phpBB/includes/compatibility_globals.php
@@ -57,6 +57,8 @@ function register_compatibility_globals()
 	// Grab global variables, re-cache if necessary
 	/* @var $config phpbb\config\db */
 	$config = $phpbb_container->get('config');
+	set_config('', '', false, $config);
+	set_config_count('', 0, false, $config);
 
 	/* @var $phpbb_log \phpbb\log\log_interface */
 	$phpbb_log = $phpbb_container->get('log');