diff --git a/13_loading_and_preprocessing_data.ipynb b/13_loading_and_preprocessing_data.ipynb
index 144b216..8561f33 100644
--- a/13_loading_and_preprocessing_data.ipynb
+++ b/13_loading_and_preprocessing_data.ipynb
@@ -2040,8 +2040,8 @@
    "outputs": [],
    "source": [
     "train_set = mnist_dataset(train_filepaths, shuffle_buffer_size=60000)\n",
-    "valid_set = mnist_dataset(train_filepaths)\n",
-    "test_set = mnist_dataset(train_filepaths)"
+    "valid_set = mnist_dataset(valid_filepaths)\n",
+    "test_set = mnist_dataset(test_filepaths)"
    ]
   },
   {