diff --git a/docker/wp-config.php b/docker/wp-config.php
index 8fa80d41344749dc810946ce56f4a015d835bcd2..b2030b0a5d64c3c6dda2e46432dedf7f8ea54b4f 100644
--- a/docker/wp-config.php
+++ b/docker/wp-config.php
@@ -168,6 +168,9 @@ define ('WPLANG', '');
 /* NoSpam API endpoint (internal). */
 define('NOSPAM_API_URL', 'http://nospam.investici.org:9001');
 
+/* default theme new blogs */
+define('WP_DEFAULT_THEME', 'classic');
+
 /*
  * Memcache servers for Wordpress object caching.
  */