diff --git a/defaultconfig.module b/defaultconfig.module
index 2ad8cfa..8cb1f8b 100644
--- a/defaultconfig.module
+++ b/defaultconfig.module
@@ -432,7 +432,7 @@ function defaultconfig_defaultconfig_components() {
           'features component' => $name,
           // We can't register CTools files as groups,
           // it causes a lot of things to fail.
-          'group' => $info['default_filename'],
+          'group' => !empty($info['default_filename']) ? $info['default_filename'] : NULL,
         );
       }
     }