diff --git a/inc/config_cascade.php b/inc/config_cascade.php
index 32001be8183f84e85c70006bc10310e13c1a9edc..b016de8a0b7da6693f94c1d1bf35d95ef7980439 100644
--- a/inc/config_cascade.php
+++ b/inc/config_cascade.php
@@ -50,6 +50,7 @@ $config_cascade = array_merge(
             ),
         'userstyle' => array(
             'default' => DOKU_CONF.'userstyle.css',
+            'rtl'     => DOKU_CONF.'rtlstyle.css',
             'print'   => DOKU_CONF.'printstyle.css',
             'feed'    => DOKU_CONF.'feedstyle.css',
             'all'     => DOKU_CONF.'allstyle.css',