diff --git a/mailpoet/tests/docker/codeception/docker-entrypoint.sh b/mailpoet/tests/docker/codeception/docker-entrypoint.sh
index a9df59e7d4..70a080c2d8 100755
--- a/mailpoet/tests/docker/codeception/docker-entrypoint.sh
+++ b/mailpoet/tests/docker/codeception/docker-entrypoint.sh
@@ -135,13 +135,12 @@ CONFIG+="define('WP_DEBUG', true);\n"
 CONFIG+="define('WP_DEBUG_DISPLAY', true);\n"
 CONFIG+="define('WP_DEBUG_LOG', true);\n"
 CONFIG+="define('COOKIE_DOMAIN', \$_SERVER['HTTP_HOST']);\n"
-CONFIG+="define('WP_AUTO_UPDATE_CORE', false);\n"
 CONFIG+="define('DISABLE_WP_CRON', true);\n"
 
 # fix for WP CLI bug (https://core.trac.wordpress.org/ticket/44569)
 CONFIG+="if (!isset(\$_SERVER['SERVER_NAME'])) \$_SERVER['SERVER_NAME'] = '';\n"
 
-sed -i "s/define( *'WP_DEBUG', false *);/$CONFIG/" /wp-core/wp-config.php
+sed -i "s/define( *'WP_DEBUG', !!getenv_docker('WORDPRESS_DEBUG', '')* );/$CONFIG/" /wp-core/wp-config.php
 
 # activate theme
 wp theme activate twentytwentyone