diff --git a/static/index.html b/static/index.html
index 64e304b7..5626a56d 100644
--- a/static/index.html
+++ b/static/index.html
@@ -13,9 +13,16 @@
 <div class="navbar navbar-inverse">
     <div class="container-fluid">
         <div class="navbar-header">
+            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
+                    data-target="#navbar-collapse" aria-expanded="false">
+                <span class="sr-only">Toggle navigation</span>
+                <span class="icon-bar"></span>
+                <span class="icon-bar"></span>
+                <span class="icon-bar"></span>
+            </button>
             <a class="navbar-brand" href="#">Compiler Explorer &dash; <span class="language-name"></span></a>
         </div>
-        <li class="navbar-collapse collapse">
+        <li class="navbar-collapse collapse" id="navbar-collapse">
             <ul class="nav navbar-nav navbar-right">
                 <li><a href="https://www.patreon.com/mattgodbolt">
                     <img height="20" width="20" src="assets/patreon_logo.png">&nbsp;