diff --git a/docs/intro/tutorial03.txt b/docs/intro/tutorial03.txt
index 1438a9e776..41e10a7abd 100644
--- a/docs/intro/tutorial03.txt
+++ b/docs/intro/tutorial03.txt
@@ -103,7 +103,7 @@ it calls that ``detail()`` function like so::
 
     detail(request=<HttpRequest object>, poll_id='23')
 
-The ``poll_id='23'`` part comes from ``(?P<poll_id>\d+)``. Using parenthesis
+The ``poll_id='23'`` part comes from ``(?P<poll_id>\d+)``. Using parentheses
 around a pattern "captures" the text matched by that pattern and sends it as an
 argument to the view function; the ``?P<poll_id>`` defines the name that will be
 used to identify the matched pattern; and ``\d+`` is a regular expression to