diff --git a/openbox.spec b/openbox.spec
index dccb6d8..8c0e4e6 100644
--- a/openbox.spec
+++ b/openbox.spec
@@ -99,12 +99,12 @@ KDE session.
 ## Fix RPATH hardcoding.
 sed -ie 's|^hardcode_libdir_flag_spec=.*$|hardcode_libdir_flag_spec=""|g' libtool
 sed -ie 's|^runpath_var=LD_RUN_PATH$|runpath_var=DIE_RPATH_DIE|g' libtool
-make %{?_smp_mflags}
+%make_build
 
 gcc $RPM_OPT_FLAGS $RPM_LD_FLAGS -o setlayout %{SOURCE1} -lX11
 
 %install
-make install DESTDIR=%{buildroot}
+%make_install
 
 install setlayout %{buildroot}%{_bindir}
 install -p %{SOURCE2} %{buildroot}%{_libexecdir}/openbox-xdg-menu