diff --git a/src/Service/WardenManager.php b/src/Service/WardenManager.php
index 14087d8..ba9316c 100644
--- a/src/Service/WardenManager.php
+++ b/src/Service/WardenManager.php
@@ -69,7 +69,7 @@ class WardenManager extends Api {
     $system_themes = system_list('theme');
 
     // Include all contrib themes.
-    if (\Drupal::config('warden.settings')->get('warden_match_contrib')) {
+    if ($this->includeContribModules()) {
       foreach ($system_themes as $theme) {
         if (isset($theme->info['package']) && $theme->info['package'] == 'Core') {
           continue;