diff --git a/src/popupmenu.c b/src/popupmenu.c
index 0e4f9fe..3a5e103 100644
--- a/src/popupmenu.c
+++ b/src/popupmenu.c
@@ -1314,6 +1314,7 @@
 	balloon_array = ALLOC_CLEAR_MULT(pumitem_T, list->lv_len);
 	if (balloon_array == NULL)
 	    return;
+	range_list_materialize(list);
 	for (idx = 0, li = list->lv_first; li != NULL; li = li->li_next, ++idx)
 	{
 	    char_u *text = tv_get_string_chk(&li->li_tv);