diff --git a/lib/hci.c b/lib/hci.c
index 2ac09a1..a3f5d96 100644
--- a/lib/hci.c
+++ b/lib/hci.c
@@ -160,6 +160,8 @@ char *hci_bustostr(int bus)
 		return "SPI";
 	case HCI_I2C:
 		return "I2C";
+	case HCI_SMD:
+		return "SMD";
 	default:
 		return "Unknown";
 	}
diff --git a/lib/hci.h b/lib/hci.h
index 747f2a6..794333b 100644
--- a/lib/hci.h
+++ b/lib/hci.h
@@ -57,6 +57,7 @@ extern "C" {
 #define HCI_SDIO	6
 #define HCI_SPI		7
 #define HCI_I2C		8
+#define HCI_SMD		9
 
 /* HCI controller types */
 #define HCI_PRIMARY	0x00