diff --git a/Notebooks/Chap13/13_3_Neighborhood_Sampling.ipynb b/Notebooks/Chap13/13_3_Neighborhood_Sampling.ipynb
index 0f77fbe..3a0bc94 100644
--- a/Notebooks/Chap13/13_3_Neighborhood_Sampling.ipynb
+++ b/Notebooks/Chap13/13_3_Neighborhood_Sampling.ipynb
@@ -268,7 +268,7 @@
       "source": [
         "# TODO Find the nodes in hidden layer 1 that connect to the nodes in hidden layer 2\n",
         "# using the adjacency matrix.  Then sample n_sample of these nodes randomly without\n",
-        "# replacement.  Make sure not to sample nodes that were already included in hidden layer 2 our the ouput layer.\n",
+        "# replacement.  Make sure not to sample nodes that were already included in hidden layer 2 our the output layer.\n",
         "# The nodes at hidden layer 1 are the union of these nodes and the nodes in hidden layer 2\n",
         "\n",
         "# Replace this line:\n",
@@ -311,4 +311,4 @@
       }
     }
   ]
-}
\ No newline at end of file
+}