diff --git a/mjx/tutorial.ipynb b/mjx/tutorial.ipynb
index 8b7b78d8..234673e8 100644
--- a/mjx/tutorial.ipynb
+++ b/mjx/tutorial.ipynb
@@ -879,7 +879,7 @@
       "source": [
         "# instantiate the environment\n",
         "\n",
-        "env_name = 'barkour'  # @param ['barkour', 'humanoid']\n",
+        "env_name = 'humanoid'  # @param ['barkour', 'humanoid']\n",
         "env = envs.get_environment(env_name)\n",
         "\n",
         "# define the jit reset/step functions\n",