setup.py             |  6 ------
 src/manuel/index.txt | 26 ++++++++------------------
 src/manuel/tests.py  | 13 +++++++++----
 3 files changed, 17 insertions(+), 28 deletions(-)

diff --git a/setup.py b/setup.py
index 4561779..b6730c8 100644
--- a/setup.py
+++ b/setup.py
@@ -20,8 +20,6 @@ with open('README.rst') as readme:
     with open('CHANGES.rst') as changes:
         long_description = readme.read() + '\n\n' + changes.read()
 
-tests_require = ['zope.testing']
-
 setup(
     name='manuel',
     version='1.8.0',
@@ -44,10 +42,6 @@ setup(
         'License :: OSI Approved :: Apache Software License',
         ],
     license='Apache Software License, Version 2.0',
-    extras_require={
-        'tests': tests_require,
-        },
-    tests_require=tests_require,
     test_suite='manuel.tests.test_suite',
     install_requires=[
         'setuptools',
diff --git a/src/manuel/index.txt b/src/manuel/index.txt
index c1d85f3..a315317 100644
--- a/src/manuel/index.txt
+++ b/src/manuel/index.txt
@@ -166,16 +166,16 @@ can pass in your own class to `TestSuite`.
 
 .. code-block:: python
 
-     import os.path
-     import manuel.testing
+    import os.path
+    import manuel.testing
 
-     class StripDirsTestCase(manuel.testing.TestCase):
-         def shortDescription(self):
-             return os.path.basename(str(self))
-     suite = manuel.testing.TestSuite(
-         m, path_to_test, TestCase=StripDirsTestCase)
+    class StripDirsTestCase(manuel.testing.TestCase):
+        def shortDescription(self):
+            return os.path.basename(str(self))
+    suite = manuel.testing.TestSuite(
+        m, path_to_test, TestCase=StripDirsTestCase)
 
-    >>> list(suite)[0].shortDescription()
+    list(suite)[0].shortDescription()
     'bugs.txt'
 
 
@@ -236,16 +236,6 @@ checkers <http://docs.python.org/library/doctest.html#outputchecker-objects>`_
    smoothes over the differences between CPython's and PyPy's NameError
    messages:
 
-.. code-block:: python
-
-    import re
-    import zope.testing.renormalizing
-    checker = zope.testing.renormalizing.RENormalizing([
-        (re.compile(r"NameError: global name '([a-zA-Z0-9_]+)' is not defined"),
-         r"NameError: name '\1' is not defined"),
-    ])
-
-
 .. reset-globs
 .. _capture:
 
diff --git a/src/manuel/tests.py b/src/manuel/tests.py
index 07723a6..b1a3a76 100644
--- a/src/manuel/tests.py
+++ b/src/manuel/tests.py
@@ -11,11 +11,12 @@ import manuel.testing
 import os.path
 import re
 import unittest
-import zope.testing.renormalizing
 
 here = os.path.dirname(os.path.abspath(__file__))
 
-checker = zope.testing.renormalizing.RENormalizing([
+try:
+	import zope.testing.renormalizing
+	checker = zope.testing.renormalizing.RENormalizing([
     (re.compile(r"<unittest\.result\.TestResult"), '<unittest.TestResult'),
     # PyPy spells some error messages differently
     (re.compile(r"NameError: global name '([a-zA-Z0-9_]+)' is not defined"),
@@ -25,7 +26,9 @@ checker = zope.testing.renormalizing.RENormalizing([
      r"<\1 object"),
     (re.compile(r"<SRE_Match object"),
      r"<_sre.SRE_Match object"),
-])
+	])
+except ImportError:
+	pass
 
 
 def turtle_on_the_bottom_test():
@@ -59,7 +62,6 @@ def test_suite():
     optionflags = doctest.NORMALIZE_WHITESPACE | doctest.ELLIPSIS
 
     m = manuel.ignore.Manuel()
-    m += manuel.doctest.Manuel(optionflags=optionflags, checker=checker)
     m += manuel.codeblock.Manuel()
     m += manuel.capture.Manuel()
     m += manuel.testcase.SectionManuel()
@@ -73,3 +75,6 @@ def test_suite():
         suite,
         doctest.DocTestSuite(),
         ))
+
+if __name__ == '__main__':
+    unittest.TextTestRunner().run(test_suite())