diff --git a/code/chapter_01_example_09.py b/code/chapter_01_example_09.py
index 37fdca6..b3ff884 100644
--- a/code/chapter_01_example_09.py
+++ b/code/chapter_01_example_09.py
@@ -39,4 +39,6 @@
     path(route='add/',
         view=views.add_topping,
         name='add_topping'),
-    ]
+    ],
+]
+