diff --git a/drivers/char/rtc.c b/drivers/char/rtc.c
index 30c3f54..ec6b65e 100644
--- a/drivers/char/rtc.c
+++ b/drivers/char/rtc.c
@@ -82,7 +82,7 @@
 #include <asm/uaccess.h>
 #include <asm/system.h>
 
-#if defined(__i386__)
+#ifdef CONFIG_X86
 #include <asm/hpet.h>
 #endif
 
diff --git a/include/asm-x86_64/apic.h b/include/asm-x86_64/apic.h
index 45e9fca..4c2d84d 100644
--- a/include/asm-x86_64/apic.h
+++ b/include/asm-x86_64/apic.h
@@ -86,6 +86,8 @@
 extern void setup_APIC_extened_lvt(unsigned char lvt_off, unsigned char vector,
 				   unsigned char msg_type, unsigned char mask);
 
+extern int apic_is_clustered_box(void);
+
 #define K8_APIC_EXT_LVT_BASE    0x500
 #define K8_APIC_EXT_INT_MSG_FIX 0x0
 #define K8_APIC_EXT_INT_MSG_SMI 0x2
diff --git a/include/asm-x86_64/hpet.h b/include/asm-x86_64/hpet.h
index 59a66f0..71ccdd1 100644
--- a/include/asm-x86_64/hpet.h
+++ b/include/asm-x86_64/hpet.h
@@ -55,7 +55,6 @@
 
 extern int is_hpet_enabled(void);
 extern int hpet_rtc_timer_init(void);
-extern int apic_is_clustered_box(void);
 extern int hpet_arch_init(void);
 extern int hpet_timer_stop_set_go(unsigned long tick);
 extern int hpet_reenable(void);
diff --git a/include/asm-x86_64/timex.h b/include/asm-x86_64/timex.h
index f6527e1..6ed21f4 100644
--- a/include/asm-x86_64/timex.h
+++ b/include/asm-x86_64/timex.h
@@ -9,7 +9,6 @@
 #include <asm/8253pit.h>
 #include <asm/msr.h>
 #include <asm/vsyscall.h>
-#include <asm/hpet.h>
 #include <asm/system.h>
 #include <asm/processor.h>
 #include <asm/tsc.h>