diff --git a/inc/parser/xhtml.php b/inc/parser/xhtml.php
index 73c2ada1c8053adfd7948fa5c9a9d097a5147333..3b253bb89986083b6221e1bf07ffdc5170a3b666 100644
--- a/inc/parser/xhtml.php
+++ b/inc/parser/xhtml.php
@@ -86,7 +86,7 @@ class Doku_Renderer_xhtml extends Doku_Renderer {
     function toc_open() {
         global $lang;
         $this->doc .= '<div class="toc">'.DOKU_LF;
-        $this->doc .= '<div class="tocheader" id="toc__header">';
+        $this->doc .= '<div class="tocheader toctoggle" id="toc__header">';
         $this->doc .= $lang['toc'];
         $this->doc .= '</div>'.DOKU_LF;
         $this->doc .= '<div id="toc__inside">'.DOKU_LF;