diff --git a/config-templates/config.php b/config-templates/config.php
index 7a8db7ff23f2c676950249d0c53633bfd48e5795..622ae0950bcca51ea021047c39408e4f10ca517b 100644
--- a/config-templates/config.php
+++ b/config-templates/config.php
@@ -834,6 +834,6 @@ $config = array(
      * Example:
      *   'trusted.url.domains' => array('sp.example.com', 'app.example.com'),
      */
-    'trusted.url.domains' => null,
+    'trusted.url.domains' => array(),
 
 );