diff --git a/Makefile.emscripten b/Makefile.emscripten
index feb7cd3551..5a0214e301 100644
--- a/Makefile.emscripten
+++ b/Makefile.emscripten
@@ -20,7 +20,7 @@ HAVE_SDL2 = 1
 HAVE_ZLIB = 1
 HAVE_FBO = 1
 WANT_ZLIB = 1
-MEMORY = 268435456
+MEMORY = 536870912
 LTO = 0
 ASYNC = 0
 # XXX: setting this to 1/2 currently crashes Firefox nightly
diff --git a/pkg/emscripten/embed/embed.js b/pkg/emscripten/embed/embed.js
index 8b0e908a00..ba4ad72af2 100644
--- a/pkg/emscripten/embed/embed.js
+++ b/pkg/emscripten/embed/embed.js
@@ -132,10 +132,10 @@ function setupFileSystem(backend)
       console.log("WEBPLAYER: Initializing LocalStorage");
 
       /* create a local filesystem */
-      var lsfs = new BrowserFS.FileSystem.LocalStorage();
+      var imfs = new BrowserFS.FileSystem.InMemoryFileSystem();
 
       /* mount the filesystems onto mfs */
-      mfs.mount('/home/web_user/retroarch/userdata', lsfs);
+      mfs.mount('/home/web_user/retroarch/userdata', imfs);
 
    }
    else