diff --git a/recipes/nytimesbook.recipe b/recipes/nytimesbook.recipe
index c8af4b674a..e9375f4fd8 100644
--- a/recipes/nytimesbook.recipe
+++ b/recipes/nytimesbook.recipe
@@ -100,7 +100,7 @@ def process_image_block(lines, block, data):
 
 
 def json_to_html(raw):
-    data = json.loads(raw)
+    data = json.loads(raw.replace(':undefined', ':null'))
     data = data['initialState']
     article = next(iter(data.values()))
     body = data[article['sprinkledBody']['id']]