diff --git a/templates/index.mustache b/templates/index.mustache
index 4565e448754f0af19502d9a39f1b9a641e09164c..a7c0f9e118c5246b4db66fb1d388b14be409c0ab 100644
--- a/templates/index.mustache
+++ b/templates/index.mustache
@@ -86,7 +86,7 @@
                     </button>
                 {{/useprintcomments}}
 
-                <button id="toolbar-dropdown-button" class="pdf-annotathidden" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
+                <button id="toolbar-dropdown-button" class="pdf-annotator-hidden" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
                     <i class="icon fa fa-bars fa-lg"></i>
                 </button>
             </div>