diff --git a/setup.py b/setup.py
index cfe1d99..38a7e89 100644
--- a/setup.py
+++ b/setup.py
@@ -60,7 +60,7 @@ def read(*rnames):
           'Natural Language :: English',
           'Operating System :: OS Independent',
           'Topic :: Internet :: WWW/HTTP',
-          'Framework :: Zope3',
+          'Framework :: Zope :: 3',
       ],
       url='https://github.com/zopefoundation/zope.viewlet',
       license='ZPL 2.1',