diff --git a/pkg/emscripten/webplayer.js b/pkg/emscripten/webplayer.js
index dec03abbfd..08885d1a42 100644
--- a/pkg/emscripten/webplayer.js
+++ b/pkg/emscripten/webplayer.js
@@ -230,5 +230,15 @@ $(function() {
   $.getScript(core + '_libretro.js', function () {
     // Activate the Start RetroArch button.
     $('#btnStart').removeClass('disabled');
+
+    /**
+     * Attempt to disable some default browser keys.
+     */
+    window.addEventListener('keydown', function(e) {
+      // Space key, arrows, and F1.
+      if([32, 37, 38, 39, 40, 112].indexOf(e.keyCode) > -1) {
+        e.preventDefault();
+      }
+    }, false);
   });
 });