diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 5c60bb16262203ab63720ee349384180e9e7d8fb..b5a0e3c5e930e0f1746cb8e4b12709709f687430 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -529,7 +529,7 @@ static void __eoi_ioapic_pin(int apic, int pin, int vector)
 	}
 }
 
-void eoi_ioapic_pin(int vector, struct mp_chip_data *data)
+static void eoi_ioapic_pin(int vector, struct mp_chip_data *data)
 {
 	unsigned long flags;
 	struct irq_pin_list *entry;