diff --git a/docs/recipes/git-show.rst b/docs/recipes/git-show.rst
index 249a6aa..0f4935d 100644
--- a/docs/recipes/git-show.rst
+++ b/docs/recipes/git-show.rst
@@ -31,7 +31,7 @@ Show SHA hash
 Show diff
 ======================================================================
 
-    >>> diff = commit.parents[0].tree.diff_to_tree(commit.tree)
+    >>> diff = repo.diff(commit.parents[0], commit)
 
 ======================================================================
 Show all files in commit
@@ -41,14 +41,37 @@ Show all files in commit
     >>>     print(e.name)
 
 ======================================================================
-Produce something like a `git show` message
+Produce something like a ``git show`` message
 ======================================================================
 
+In order to display timezone information you have to create a subclass of
+tzinfo as described in the `Python datetime documentation`_::
+
+    from datetime import tzinfo, timedelta
+    class FixedOffset(tzinfo):
+        """Fixed offset in minutes east from UTC."""
+
+        def __init__(self, offset):
+            self.__offset = timedelta(minutes = offset)
+
+        def utcoffset(self, dt):
+            return self.__offset
+
+        def tzname(self, dt):
+            return None
+
+        def dst(self, dt):
+            return timedelta(0) # dealing with DST would be too complicated
+
+.. _Python datetime documentation: https://docs.python.org/2/library/datetime.html#tzinfo-objects
+
+Then you can make your message:
+
     >>> from __future__ import unicode_literals
     >>> from datetime import datetime
-    >>> import pytz
-    >>> tzinfo  = pytz.timezone('Europe/Berlin')
-    >>> dt      = datetime.fromtimestamp(float(commit.commit_time), tzinfo)
+    >>>
+    >>> tzinfo  = FixedOffset(commit.author.offset)
+    >>> dt      = datetime.fromtimestamp(float(commit.author.time), tzinfo)
     >>> timestr = dt.strftime('%c %z')
     >>> msg     = '\n'.join(['commit {}'.format(commit.tree_id.hex),
     ...                      'Author: {} <{}>'.format(commit.author.name, commit.author.email),