diff --git a/kf5-kunitconversion.spec b/kf5-kunitconversion.spec
index bf5a15c..8f71af2 100644
--- a/kf5-kunitconversion.spec
+++ b/kf5-kunitconversion.spec
@@ -53,7 +53,7 @@ popd
 make %{?_smp_mflags} -C %{_target_platform}
 
 %install
-%make_install -C %{_target_platform}
+make install/fast DESTDIR=%{buildroot} -C %{_target_platform}
 %find_lang kunitconversion5_qt --with-qt --all-name
 
 %post -p /sbin/ldconfig