diff --git a/tests/transport.c b/tests/transport.c
index 16cc437..70b5da7 100644
--- a/tests/transport.c
+++ b/tests/transport.c
@@ -230,7 +230,7 @@ static int _transport_callback_timeout(void * data)
 /* usage */
 static int _usage(void)
 {
-	fputs("Usage: transport -p protocol name\n", stderr);
+	fputs("Usage: transport [-p protocol] [name]\n", stderr);
 	return 1;
 }