diff --git a/src/kiri/init.js b/src/kiri/init.js
index 6b26ffb1..fa32f1f5 100644
--- a/src/kiri/init.js
+++ b/src/kiri/init.js
@@ -2657,7 +2657,7 @@ gapp.register("kiri.init", [], (root, exports) => {
         $('rot_z_lt').onclick = () => { api.selection.rotate(0,0, d * $('rot_z').value) };
         $('rot_z_gt').onclick = () => { api.selection.rotate(0,0,-d * $('rot_z').value) };
         // rendering options
-        $('render-outline').onclick = () => { api.view.outline({ toggle: true }) };
+        $('render-outline').onclick = () => { api.view.outline({ toggle: true }); api.conf.save() };
         $('render-ghost').onclick = () => { api.view.wireframe(false, 0, api.view.is_arrange() ? 0.4 : 0.25); };
         $('render-wire').onclick = () => { api.view.wireframe(true, 0, api.space.is_dark() ? 0.25 : 0.5); };
         $('render-solid').onclick = () => { api.view.wireframe(false, 0, 1); };