diff --git a/gui/app/templates/components/document/document-toc.hbs b/gui/app/templates/components/document/document-toc.hbs
index 480022fb..5fbd720f 100644
--- a/gui/app/templates/components/document/document-toc.hbs
+++ b/gui/app/templates/components/document/document-toc.hbs
@@ -1,7 +1,7 @@
 <div id="sidebar" class="sidebar-white document-sidebar">
 
 	<div class="sidebar-view-switcher d-flex align-items-center justify-content-center">
-		<i class="material-icons">reorder</i>
+		<i class="material-icons" title="Table of contents" data-toggle="tooltip" data-placement="top">reorder</i>
 	</div>
 
 	<div id="doc-toc" class="document-toc {{if isDesktop 'document-toc-desktop'}}">