diff --git a/src/main.c b/src/main.c
index 6f6f572..b8d7240 100644
--- a/src/main.c
+++ b/src/main.c
@@ -42,7 +42,7 @@
 /* usage */
 static int _usage(void)
 {
-	fputs(_("Usage: phone -b baudrate -d device -r retry -F\n"
+	fputs(_("Usage: phone [-b baudrate][-d device][-r retry][-F]\n"
 "  -b	Speed to set before communicating with the device\n"
 "  -d	Path to the modem device\n"
 "  -r	Delay between two tries to open and settle with the modem (ms)\n"