diff --git a/lz4.spec b/lz4.spec
index 7d6fde9..a70d607 100644
--- a/lz4.spec
+++ b/lz4.spec
@@ -29,7 +29,12 @@ make %{?_smp_mflags}
 %make_install PREFIX=$RPM_BUILD_ROOT%{_prefix} INSTALL="install -p"
 
 
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+
 %files
+%defattr(-,root,root,-)
 %doc COPYING NEWS
 %{_bindir}/lz4
 %{_mandir}/man1/lz4.1.gz
@@ -38,6 +43,7 @@ make %{?_smp_mflags}
 %changelog
 * Tue Oct 08 2013 pjp <pjp@fedoraproject.org> - r106-4
 - defined BuildRoot to fix a build error on ppc platform.
+- added clean & default attribute macros.
 
 * Mon Oct 07 2013 pjp <pjp@fedoraproject.org> - r106-3
 - fixed install section to replace /usr/ with a macro.