diff --git a/kf5-kdesu.spec b/kf5-kdesu.spec
index 894f20f..b203fce 100644
--- a/kf5-kdesu.spec
+++ b/kf5-kdesu.spec
@@ -56,7 +56,7 @@ popd
 make %{?_smp_mflags} -C %{_target_platform}
 
 %install
-%make_install -C %{_target_platform}
+make install/fast DESTDIR=%{buildroot} -C %{_target_platform}
 %find_lang kdesu5_qt --with-qt --all-name