diff --git a/website/docs/usage/lightning-tour.jade b/website/docs/usage/lightning-tour.jade
index 4a9a2315f..eefb7a11a 100644
--- a/website/docs/usage/lightning-tour.jade
+++ b/website/docs/usage/lightning-tour.jade
@@ -129,13 +129,14 @@ p
 +code.
     import spacy
     from spacy.tokens.doc import Doc
+    from spacy.vocab import Vocab
 
     nlp = spacy.load('en')
     moby_dick = open('moby_dick.txt', 'r')
     doc = nlp(moby_dick)
     doc.to_disk('/moby_dick.bin')
 
-    new_doc = Doc().from_disk('/moby_dick.bin')
+    new_doc = Doc(Vocab()).from_disk('/moby_dick.bin')
 
 +infobox
     |  #[strong Usage:] #[+a("/docs/usage/saving-loading") Saving and loading]