diff --git a/mptcpd.spec b/mptcpd.spec
index a2fa959..856608a 100644
--- a/mptcpd.spec
+++ b/mptcpd.spec
@@ -54,6 +54,8 @@ install -d %{buildroot}/%{_unitdir}
 install -d %{buildroot}/%{_libdir}/%{name}
 install -d %{buildroot}/%{_includedir}/%{name}
 %make_install
+sed -i '/^# addr-flags=subflow/s/^# //g' %{buildroot}/%{_sysconfdir}/%{name}/%{name}.conf
+sed -i '/^# notify-flags=existing,skip_link_local,skip_loopback/s/^# //g' %{buildroot}/%{_sysconfdir}/%{name}/%{name}.conf
 find %{buildroot} -name '*.la' -exec rm -f {} ';'
 
 %post -p /sbin/ldconfig