diff --git a/notebooks/unit1/unit1.ipynb b/notebooks/unit1/unit1.ipynb
index f01a84f..8d0cbb3 100644
--- a/notebooks/unit1/unit1.ipynb
+++ b/notebooks/unit1/unit1.ipynb
@@ -694,7 +694,7 @@
         "# TODO: Train it for 1,000,000 timesteps\n",
         "\n",
         "# TODO: Specify file name for model and save the model to file\n",
-        "model_name = \"ppo-LunarLander-v2\"\n",
+         "model_name = \"ppo-LunarLander-v2\"\n",
       ]
     },
     {