diff --git a/src/popupwin.c b/src/popupwin.c
index fddcaa1..0896f17 100644
--- a/src/popupwin.c
+++ b/src/popupwin.c
@@ -2983,7 +2983,7 @@
 	dict_add_number(dict, "scrollbar", wp->w_want_scrollbar);
 	dict_add_number(dict, "zindex", wp->w_zindex);
 	dict_add_number(dict, "fixed", wp->w_popup_fixed);
-	if (wp->w_popup_prop_type && win_valid(wp->w_popup_prop_win))
+	if (wp->w_popup_prop_type && win_valid_any_tab(wp->w_popup_prop_win))
 	{
 	    proptype_T *pt = text_prop_type_by_id(
 				 wp->w_popup_prop_win->w_buffer,