diff --git a/include/linux/virtio_pci.h b/include/linux/virtio_pci.h
index 860eb37..b315165 100644
--- a/include/linux/virtio_pci.h
+++ b/include/linux/virtio_pci.h
@@ -52,4 +52,6 @@
  * configuration space */
 #define VIRTIO_PCI_CONFIG		20
 
+/* Virtio ABI version, this must match exactly */
+#define VIRTIO_PCI_ABI_VERSION		0
 #endif