diff --git a/tutorials/W1D3_GeneralizedLinearModels/W1D3_Tutorial2.ipynb b/tutorials/W1D3_GeneralizedLinearModels/W1D3_Tutorial2.ipynb
index cc12d1f3b..69683a39c 100644
--- a/tutorials/W1D3_GeneralizedLinearModels/W1D3_Tutorial2.ipynb
+++ b/tutorials/W1D3_GeneralizedLinearModels/W1D3_Tutorial2.ipynb
@@ -1548,7 +1548,7 @@
         "\n",
         "# Visualize\n",
         "with plt.xkcd():\n",
-        "  plot_model_selection(C_values.astype('float'), accuracies)"
+        "  plot_model_selection(C_values, accuracies)"
       ]
     },
     {