diff --git a/drivers/staging/hv/vmbus_drv.c b/drivers/staging/hv/vmbus_drv.c
index 8663f6459dd8..4106dd321faf 100644
--- a/drivers/staging/hv/vmbus_drv.c
+++ b/drivers/staging/hv/vmbus_drv.c
@@ -40,7 +40,7 @@
 #include "vmbus_private.h"
 
 
-struct pci_dev *hv_pci_dev;
+static struct pci_dev *hv_pci_dev;
 
 /* Main vmbus driver data structure */
 struct hv_bus {