diff --git a/includes/Fragments/TemplateOutput.php b/includes/Fragments/TemplateOutput.php
index ebff81a27..b7ace6f8a 100644
--- a/includes/Fragments/TemplateOutput.php
+++ b/includes/Fragments/TemplateOutput.php
@@ -45,7 +45,7 @@ final protected function setUpSmarty()
         $this->smarty->addPluginsDir($this->getSiteConfiguration()->getFilePath() . '/smarty-plugins');
 
         $this->assign('currentUser', User::getCommunity());
-        $this->assign('skin', 'main');
+        $this->assign('skin', 'auto');
         $this->assign('currentDomain', null);
         $this->assign('loggedIn', false);
         $this->assign('baseurl', $this->getSiteConfiguration()->getBaseUrl());
diff --git a/templates/base.tpl b/templates/base.tpl
index 12563d98c..761ff98bc 100644
--- a/templates/base.tpl
+++ b/templates/base.tpl
@@ -7,7 +7,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
     <!-- bootstrap styles -->
-    <link href="{$baseurl}/resources/generated/bootstrap-{$skin|escape|default:'main'}.css?{$resourceCacheEpoch}" rel="stylesheet"/>
+    <link href="{$baseurl}/resources/generated/bootstrap-{$skin|escape|default:'auto'}.css?{$resourceCacheEpoch}" rel="stylesheet"/>
 
     <!-- fontawesome -->
     <link href="{$baseurl}/vendor/fortawesome/font-awesome/css/all.min.css" rel="stylesheet"/>