diff --git a/python-kdcproxy.spec b/python-kdcproxy.spec
index b96b135..cb38be0 100644
--- a/python-kdcproxy.spec
+++ b/python-kdcproxy.spec
@@ -70,16 +70,15 @@ minimal configuration.
 %patch0 -p1
 
 %build
-%{__python} setup.py build
+%py2_build
+%if 0%{?rhel} == 0
+%py3_build
+%endif
 
 %install
-rm -rf $RPM_BUILD_ROOT
-%{__python2} setup.py install --skip-build --root $RPM_BUILD_ROOT
-find $RPM_BUILD_ROOT%{python_sitelib}/%{realname}/ -name '*.py' -exec chmod 755 '{}' \;
-
+%py2_install
 %if 0%{?rhel} == 0
-%{__python3} setup.py install --skip-build --root $RPM_BUILD_ROOT
-find $RPM_BUILD_ROOT%{python3_sitelib}/%{realname}/ -name '*.py' -exec chmod 755 '{}' \;
+%py3_install
 %endif
 
 %check