diff --git a/sys/dev/bhnd/bhnd_subr.c b/sys/dev/bhnd/bhnd_subr.c
index 1d5557b024d..5f92e9d7347 100644
--- a/sys/dev/bhnd/bhnd_subr.c
+++ b/sys/dev/bhnd/bhnd_subr.c
@@ -184,6 +184,8 @@ bhnd_port_type_name(bhnd_port_type port_type)
 		return ("bridge");
 	case BHND_PORT_AGENT:
 		return ("agent");
+	default:
+		return "unknown";
 	}
 }