diff --git a/src/win.c b/src/win.c
index 1a10e064..c8c284bc 100644
--- a/src/win.c
+++ b/src/win.c
@@ -904,6 +904,7 @@ void win_update_opacity_rule(session_t *ps, struct managed_win *w) {
  * TODO need better name
  */
 void win_on_factor_change(session_t *ps, struct managed_win *w) {
+	log_debug("Window %#010x (%s) factor change", w->base.id, w->name);
 	// Focus needs to be updated first, as other rules might depend on the focused
 	// state of the window
 	win_update_focused(ps, w);
@@ -911,6 +912,8 @@ void win_on_factor_change(session_t *ps, struct managed_win *w) {
 	win_determine_shadow(ps, w);
 	win_determine_invert_color(ps, w);
 	win_determine_blur_background(ps, w);
+	w->mode = win_calc_mode(w);
+	log_debug("Window mode changed to %d", w->mode);
 	win_update_opacity_rule(ps, w);
 	if (w->a.map_state == XCB_MAP_STATE_VIEWABLE)
 		w->paint_excluded = c2_match(ps, w, ps->o.paint_blacklist, NULL);