diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 526fa8b19cda..8313e25378cb 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -48,7 +48,7 @@ static struct completion probe_event;
 static int irq;
 
 
-int hyperv_panic_event(struct notifier_block *nb,
+static int hyperv_panic_event(struct notifier_block *nb,
 			unsigned long event, void *ptr)
 {
 	struct pt_regs *regs;