diff --git a/Notebooks/Chap17/17_2_Reparameterization_Trick.ipynb b/Notebooks/Chap17/17_2_Reparameterization_Trick.ipynb
index 21b48c6..88075f0 100644
--- a/Notebooks/Chap17/17_2_Reparameterization_Trick.ipynb
+++ b/Notebooks/Chap17/17_2_Reparameterization_Trick.ipynb
@@ -83,7 +83,7 @@
     {
       "cell_type": "code",
       "source": [
-        "# Let's approximate this expecctation for a particular value of phi\n",
+        "# Let's approximate this expectation for a particular value of phi\n",
         "def compute_expectation(phi, n_samples):\n",
         "  # TODO complete this function\n",
         "  # 1. Compute the mean of the normal distribution, mu\n",