diff --git a/libguile/__scm.h b/libguile/__scm.h
index d58e9d91e..07a1e994e 100644
--- a/libguile/__scm.h
+++ b/libguile/__scm.h
@@ -2,7 +2,7 @@
 
 #ifndef __SCMH
 #define __SCMH
-/*	Copyright (C) 1995, 1996, 1998, 1999 Free Software Foundation, Inc.
+/*	Copyright (C) 1995, 1996, 1998, 1999, 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
@@ -332,6 +332,7 @@ do { \
 do { \
   SCM_DEFER_INTS; \
   SCM_ALLOW_INTS; \
+  SCM_ASYNC_TICK; \
 } while (0)