diff --git a/pkg/emscripten/proto.html b/pkg/emscripten/proto.html
index b08de258e5..e62357a0bf 100644
--- a/pkg/emscripten/proto.html
+++ b/pkg/emscripten/proto.html
@@ -49,6 +49,7 @@
                           <a class="dropdown-item" href="." onclick=switchCore("fbalpha2012_cps2")>FB Alpha 2012 CPS2</a>
                           <a class="dropdown-item" href="." onclick=switchCore("fbalpha2012_neo")>FB Alpha 2012 NeoGeo</a>
                           <a class="dropdown-item" href="." onclick=switchCore("fceumm")>FCEUmm</a>
+                          <a class="dropdown-item" href="." onclick=switchCore("ffmpeg")>FFmpeg</a>
                           <a class="dropdown-item" href="." onclick=switchCore("gambatte")>Gambatte</a>
                           <a class="dropdown-item" href="." onclick=switchCore("genesis_plus_gx")>Genesis Plus GX</a>
                           <a class="dropdown-item" href="." onclick=switchCore("gme")>Game Music Emu</a>