diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h
index ac1d5da14734..e4585a393965 100644
--- a/arch/x86/include/asm/setup.h
+++ b/arch/x86/include/asm/setup.h
@@ -44,7 +44,6 @@ extern unsigned long saved_video_mode;
 
 extern void reserve_standard_io_resources(void);
 extern void i386_reserve_resources(void);
-extern void setup_default_timer_irq(void);
 
 #ifdef CONFIG_X86_INTEL_MID
 extern void x86_intel_mid_early_setup(void);
diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c
index d39c09119db6..e0754cdbad37 100644
--- a/arch/x86/kernel/time.c
+++ b/arch/x86/kernel/time.c
@@ -66,7 +66,7 @@ static struct irqaction irq0  = {
 	.name = "timer"
 };
 
-void __init setup_default_timer_irq(void)
+static void __init setup_default_timer_irq(void)
 {
 	if (!nr_legacy_irqs())
 		return;