diff --git a/test/boot/expo.c b/test/boot/expo.c
index 96c5943..a50e9f7 100644
--- a/test/boot/expo.c
+++ b/test/boot/expo.c
@@ -707,6 +707,7 @@
 	struct scene_obj_menu *menu;
 	struct scene_menitem *item;
 	struct scene_obj_txt *txt;
+	struct abuf orig, *copy;
 	struct scene_obj *obj;
 	struct scene *scn;
 	struct expo *exp;
@@ -774,6 +775,16 @@
 	count = list_count_nodes(&menu->item_head);
 	ut_asserteq(3, count);
 
+	/* try editing some text */
+	ut_assertok(expo_edit_str(exp, txt->gen.str_id, &orig, &copy));
+	ut_asserteq_str("2 GHz", orig.data);
+	ut_asserteq_str("2 GHz", copy->data);
+
+	/* change it and check that things look right */
+	abuf_printf(copy, "atlantic %d", 123);
+	ut_asserteq_str("2 GHz", orig.data);
+	ut_asserteq_str("atlantic 123", copy->data);
+
 	expo_destroy(exp);
 
 	return 0;