diff --git a/plinth/templates/base.html b/plinth/templates/base.html
index 097c85b9d..5c079ad84 100644
--- a/plinth/templates/base.html
+++ b/plinth/templates/base.html
@@ -50,7 +50,8 @@
     <div class="container-fluid">
       <div class="navbar-header">
         <button type="button" class="navbar-toggle" data-toggle="collapse"
-          data-target=".navbar-collapse">
+                data-target=".navbar-collapse">
+          <span class="sr-only">Toggle navigation</span>
           <span class="icon-bar"></span>
           <span class="icon-bar"></span>
           <span class="icon-bar"></span>