diff --git a/cppunit.spec b/cppunit.spec
index 3515621..a3b55bd 100644
--- a/cppunit.spec
+++ b/cppunit.spec
@@ -47,12 +47,12 @@ sed -i \
 make %{?_smp_mflags}
 
 %install
-make install DESTDIR=$RPM_BUILD_ROOT INSTALL='install -p'
-rm $RPM_BUILD_ROOT%{_libdir}/*.la
+make install DESTDIR=%{buildroot} INSTALL='install -p'
+rm %{buildroot}%{_libdir}/*.la
 # remove double of doc
-rm -rf $RPM_BUILD_ROOT%{_datadir}/doc/cppunit $RPM_BUILD_ROOT%{_datadir}/%{name}/html
+rm -rf %{buildroot}%{_datadir}/doc/cppunit %{buildroot}%{_datadir}/%{name}/html
 # remove unused cppunit-config
-rm -f $RPM_BUILD_ROOT%{_bindir}/cppunit-config $RPM_BUILD_ROOT%{_mandir}/man1/cppunit-config.1* $RPM_BUILD_ROOT%{_datadir}/aclocal/cppunit.m4
+rm -f %{buildroot}%{_bindir}/cppunit-config %{buildroot}%{_mandir}/man1/cppunit-config.1* %{buildroot}%{_datadir}/aclocal/cppunit.m4
 
 # clean up examples
 rm -rf __dist-examples __dist-examples-dir