diff --git a/sys/sparc64/include/clock.h b/sys/sparc64/include/clock.h
index c98b024437e3..fbedfea57de9 100644
--- a/sys/sparc64/include/clock.h
+++ b/sys/sparc64/include/clock.h
@@ -33,6 +33,9 @@ extern u_long tick_increment;
 extern u_long tick_freq;
 extern u_long tick_MHz;
 
+extern int adjkerntz;
+extern int wall_cmos_clock;
+
 int	sysbeep(int, int);
 
 #endif /* !_MACHINE_CLOCK_H_ */