diff --git a/ipynb/xkcd1313.ipynb b/ipynb/xkcd1313.ipynb
index bec2c5c..85eadab 100644
--- a/ipynb/xkcd1313.ipynb
+++ b/ipynb/xkcd1313.ipynb
@@ -1103,7 +1103,7 @@
     "\n",
     "<hr>\n"
    ]
-  },
+
  ],
  "metadata": {
   "kernelspec": {