diff --git a/lib/config.php b/lib/config.php
index 58317fe..a6e67ca 100644
--- a/lib/config.php
+++ b/lib/config.php
@@ -13,6 +13,10 @@ add_theme_support('jquery-cdn');            // Enable to load jQuery from the Go
  */
 define('GOOGLE_ANALYTICS_ID', ''); // UA-XXXXX-Y (Note: Universal Analytics only, not Classic Analytics)
 
+if (!defined('WP_ENV')) {
+  define('WP_ENV', 'development'); // scripts.php checks for values 'production' or 'development'
+}
+
 /**
  * .main classes
  */