diff --git a/book/ch02.rst b/book/ch02.rst
index 4e22f4ce..ec75df0a 100755
--- a/book/ch02.rst
+++ b/book/ch02.rst
@@ -274,6 +274,7 @@ Let's compare genres in their usage of modal verbs.  The first step
 is to produce the counts for a particular genre.  Remember to
 ``import nltk`` before doing the following:
 
+    >>> import nltk
     >>> from nltk.corpus import brown
     >>> news_text = brown.words(categories='news')
     >>> fdist = nltk.FreqDist(w.lower() for w in news_text)