diff --git a/emscripten/template2.html b/emscripten/template2.html
index e8d4af262e..ab0af28768 100644
--- a/emscripten/template2.html
+++ b/emscripten/template2.html
@@ -27,8 +27,9 @@
 <body>
 </p>
 <div class="canvas_border" id="canvas_div" style="display: block">
-  <canvas class="emscripten" id="canvas" oncontextmenu="event.preventDefault()"></canvas>
+  <canvas class="emscripten" id="canvas" tabindex="1" oncontextmenu="event.preventDefault()"></canvas>
 </div>
+<input type="checkbox" id="sdl2"><label for="sdl2" id="sdl2-label">Enable SDL2</label><br>
 </p>
 <div id="accordion" class="emscripten">
   <h3>Settings</h3>
