diff --git a/python-zope-testing.spec b/python-zope-testing.spec
index 4e49451..eedb086 100644
--- a/python-zope-testing.spec
+++ b/python-zope-testing.spec
@@ -17,7 +17,7 @@ Summary:        Zope Testing Framework
 Group:          Development/Languages
 License:        ZPLv2.1
 URL:            http://pypi.python.org/pypi/%{modname}
-Source0:        http://pypi.python.org/packages/source/z/%{modname}/%{modname}-%{version}.zip
+Source0:        http://pypi.python.org/packages/source/z/%{modname}/%{modname}-%{version}.tar.gz
 
 BuildArch:      noarch
 BuildRequires:  python-devel