diff --git a/OvmfPkg/Include/IndustryStandard/Virtio.h b/OvmfPkg/Include/IndustryStandard/Virtio.h
index f1eb2ea120..9b97e6db2f 100644
--- a/OvmfPkg/Include/IndustryStandard/Virtio.h
+++ b/OvmfPkg/Include/IndustryStandard/Virtio.h
@@ -35,6 +35,13 @@
 #define VIRTIO_SUBSYSTEM_9P_TRANSPORT       9
 #define VIRTIO_SUBSYSTEM_MAC80211_WLAN      10
 
+//
+// Virtio IDs
+//
+#define VIRTIO_VENDOR_ID                    0x1AF4
+#define VIRTIO_MMIO_MAGIC                   0x74726976 // "virt"
+
+
 //
 // VirtIo Device Specific Configuration Offsets
 //