diff --git a/sys/sys/systm.h b/sys/sys/systm.h
index c15566095386..cd15cf1008a3 100644
--- a/sys/sys/systm.h
+++ b/sys/sys/systm.h
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)systm.h	8.7 (Berkeley) 3/29/95
- * $Id: systm.h,v 1.63 1997/11/21 11:37:03 bde Exp $
+ * $Id: systm.h,v 1.64 1997/11/21 18:27:15 bde Exp $
  */
 
 #ifndef _SYS_SYSTM_H_
@@ -142,6 +142,10 @@ void	setstatclockrate __P((int hzrate));
 void	hardupdate __P((long));
 void	hardpps __P((struct timeval *tvp, long usec));
 
+#ifdef APM_FIXUP_CALLTODO 
+void	adjust_timeout_calltodo __P((struct timeval *time_change)); 
+#endif /* APM_FIXUP_CALLTODO */ 
+
 #include <sys/libkern.h>
 
 /* Initialize the world */