diff --git a/ncurses/base/use_window.c b/ncurses/base/use_window.c
index 8eb7339..4893053 100644
--- a/ncurses/base/use_window.c
+++ b/ncurses/base/use_window.c
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 2007-2008,2009 Free Software Foundation, Inc.              *
+ * Copyright 2018,2020 Thomas E. Dickey                                     *
+ * Copyright 2007-2009,2016 Free Software Foundation, Inc.                  *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -32,14 +33,19 @@
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: use_window.c,v 1.9 2009/10/24 22:40:24 tom Exp $")
+MODULE_ID("$Id: use_window.c,v 1.13 2020/02/02 23:34:34 tom Exp $")
 
 NCURSES_EXPORT(int)
 use_window(WINDOW *win, NCURSES_WINDOW_CB func, void *data)
 {
     int code = OK;
+    TR_FUNC_BFR(1);
 
-    T((T_CALLED("use_window(%p,%p,%p)"), (void *) win, func, data));
+    T((T_CALLED("use_window(%p,%s,%p)"),
+       (void *) win,
+       TR_FUNC_ARG(0, func),
+       data));
+
     _nc_lock_global(curses);
     code = func(win, data);
     _nc_unlock_global(curses);