diff --git a/docs/intro/whatsnext.txt b/docs/intro/whatsnext.txt
index c3cc9623414..5f0ee398f35 100644
--- a/docs/intro/whatsnext.txt
+++ b/docs/intro/whatsnext.txt
@@ -159,7 +159,7 @@ Django document:
 
 .. code-block:: bash
 
-    $ grep max_length /path/to/django/docs/*.txt
+    $ grep -r max_length /path/to/django/docs/*.txt
     
 As HTML, locally
 ----------------