diff --git a/01_intro.ipynb b/01_intro.ipynb
index f41af67..5a61878 100644
--- a/01_intro.ipynb
+++ b/01_intro.ipynb
@@ -730,7 +730,7 @@
    "source": [
     "#hide\n",
     "# For the book, we can't actually click an upload button, so we fake it\n",
-    "uploader = SimpleNamespace(data = ['images/chapter1_cat_example.jpg'])"
+    "uploader = SimpleNamespace(data = [image_cat()])"
    ]
   },
   {