fix missing bracket
diff --git a/Doc/howto/functional.rst b/Doc/howto/functional.rst
index 792344d..b717f80 100644
--- a/Doc/howto/functional.rst
+++ b/Doc/howto/functional.rst
@@ -728,7 +728,7 @@
if line.strip() == '':
print 'Blank line at line #%i' % i
-``sorted(iterable, [cmp=None], [key=None], [reverse=False)`` collects all the
+``sorted(iterable, [cmp=None], [key=None], [reverse=False])`` collects all the
elements of the iterable into a list, sorts the list, and returns the sorted
result. The ``cmp``, ``key``, and ``reverse`` arguments are passed through to
the constructed list's ``.sort()`` method. ::