diff --git a/setup.py b/setup.py
index 91314c2..f7b36fa 100644
--- a/setup.py
+++ b/setup.py
@@ -43,7 +43,7 @@ def read(*rnames):
         'Natural Language :: English',
         'Operating System :: OS Independent',
         'Topic :: Internet :: WWW/HTTP',
-        'Framework :: Zope3'],
+        'Framework :: Zope :: 3'],
     url = 'http://pypi.python.org/pypi/z3c.language.session',
     packages = find_packages('src'),
     include_package_data = True,