diff --git a/arch/x86/kernel/irqinit_64.c b/arch/x86/kernel/irqinit_64.c
index cb875a63867d7eb2e2f63bf9ebbb4b29153f84b4..da481a1e3f303f8fe3bf10995e8e218cc556f2d4 100644
--- a/arch/x86/kernel/irqinit_64.c
+++ b/arch/x86/kernel/irqinit_64.c
@@ -81,7 +81,7 @@ int vector_used_by_percpu_irq(unsigned int vector)
 	return 0;
 }
 
-void __init init_ISA_irqs(void)
+static void __init init_ISA_irqs(void)
 {
 	int i;