diff --git a/lib/private/TemplateLayout.php b/lib/private/TemplateLayout.php
index 67ba831dfafeb03db218d141ef2ac4b3ed949ab8..bc6a485ad4369119711ad83200059082c86e2dd1 100644
--- a/lib/private/TemplateLayout.php
+++ b/lib/private/TemplateLayout.php
@@ -166,9 +166,9 @@ class TemplateLayout extends \OC_Template {
 			$cssFiles = self::findStylesheetFiles(\OC_Util::$styles);
 		} else {
 			$cssFiles = array(
-				[\OC::$SERVERROOT, '', 'core/css/global.css'],
-				[\OC::$SERVERROOT, '', 'core/css/fonts.css'],
-				[\OC::$SERVERROOT, '', 'core/css/installation.css']
+				[\OC::$SERVERROOT, \OC::$WEBROOT, 'core/css/global.css'],
+				[\OC::$SERVERROOT, \OC::$WEBROOT, 'core/css/fonts.css'],
+				[\OC::$SERVERROOT, \OC::$WEBROOT, 'core/css/installation.css']
 			);
 		}
 		$this->assign('cssfiles', array());