Index: uspace/lib/ui/include/ui/wdecor.h
===================================================================
--- uspace/lib/ui/include/ui/wdecor.h	(revision c632c969ffb9871f32ae6c135490d77fb8a4db87)
+++ uspace/lib/ui/include/ui/wdecor.h	(revision ec8a1bf729633d598cbbcad31d55f267ed2c6237)
@@ -1,4 +1,4 @@
 /*
- * Copyright (c) 2020 Jiri Svoboda
+ * Copyright (c) 2021 Jiri Svoboda
  * All rights reserved.
  *
@@ -51,4 +51,5 @@
 extern void ui_wdecor_set_rect(ui_wdecor_t *, gfx_rect_t *);
 extern void ui_wdecor_set_active(ui_wdecor_t *, bool);
+extern errno_t ui_wdecor_set_caption(ui_wdecor_t *, const char *);
 extern errno_t ui_wdecor_paint(ui_wdecor_t *);
 extern ui_evclaim_t ui_wdecor_pos_event(ui_wdecor_t *, pos_event_t *);
Index: uspace/lib/ui/include/ui/window.h
===================================================================
--- uspace/lib/ui/include/ui/window.h	(revision c632c969ffb9871f32ae6c135490d77fb8a4db87)
+++ uspace/lib/ui/include/ui/window.h	(revision ec8a1bf729633d598cbbcad31d55f267ed2c6237)
@@ -51,4 +51,5 @@
     ui_window_t **);
 extern void ui_window_set_cb(ui_window_t *, ui_window_cb_t *, void *);
+extern errno_t ui_window_set_caption(ui_window_t *, const char *);
 extern void ui_window_destroy(ui_window_t *);
 extern void ui_window_add(ui_window_t *, ui_control_t *);