diff --git a/acconfig.h b/acconfig.h
index 5f20c10d8..e8e51deb4 100644
--- a/acconfig.h
+++ b/acconfig.h
@@ -3,17 +3,17 @@
  * libguile/scmconfig.h, based on configure.in and this file.
  *
  *	Copyright (C) 1998, 2000 Free Software Foundation, Inc.
- * 
+ *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2, or (at your option)
  * any later version.
- * 
+ *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU General Public License
  * along with this software; see the file COPYING.  If not, write to
  * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
@@ -44,7 +44,7 @@
  * If you do not wish that, delete this exception notice.  */
 
 
-#ifndef PORTSH
+#ifndef PORTSH                          /* how did this pass release? */
 #define PORTSH
 
 /* Define these two if you want support for debugging of Scheme