diff --git a/lib/hci.c b/lib/hci.c
index d5d21ab..9960c44 100644
--- a/lib/hci.c
+++ b/lib/hci.c
@@ -163,6 +163,8 @@ char *hci_bustostr(int bus)
 		return "I2C";
 	case HCI_SMD:
 		return "SMD";
+	case HCI_VIRTIO:
+		return "VIRTIO";
 	default:
 		return "Unknown";
 	}
diff --git a/lib/hci.h b/lib/hci.h
index 794333b..232d5bd 100644
--- a/lib/hci.h
+++ b/lib/hci.h
@@ -58,6 +58,7 @@ extern "C" {
 #define HCI_SPI		7
 #define HCI_I2C		8
 #define HCI_SMD		9
+#define HCI_VIRTIO	10
 
 /* HCI controller types */
 #define HCI_PRIMARY	0x00