diff --git a/include/asm-i386/timer.h b/include/asm-i386/timer.h
index 1ee64e3..4752c3a 100644
--- a/include/asm-i386/timer.h
+++ b/include/asm-i386/timer.h
@@ -9,6 +9,8 @@
 extern int pit_latch_buggy;
 extern int timer_ack;
 extern int no_timer_check;
+extern unsigned long long (*custom_sched_clock)(void);
+extern int no_sync_cmos_clock;
 extern int recalibrate_cpu_khz(void);
 
 #endif