diff --git a/setup.py b/setup.py
index 36ebe12..0d3679b 100644
--- a/setup.py
+++ b/setup.py
@@ -49,7 +49,7 @@
         'Programming Language :: Python :: Implementation',
         'Programming Language :: Python :: Implementation :: CPython',
         'Programming Language :: Python :: Implementation :: PyPy',
-        'Framework :: Zope3',
+        'Framework :: Zope :: 3',
         ],
     keywords="grok chameleon template",
     author="Uli Fouquet",