diff --git a/src/driver/tpax_driver_ctx.c b/src/driver/tpax_driver_ctx.c
index 5593ec6..74db70d 100644
--- a/src/driver/tpax_driver_ctx.c
+++ b/src/driver/tpax_driver_ctx.c
@@ -89,7 +89,7 @@ static int tpax_driver_usage(
 		"Synopsis:\n"
 		"       %s [-d] [-f archive]\n"
 		"       %s -r [-d] [-f archive]\n"
-		"       %s -w [−x format] [-b blocksize] [-dtv] [-H|-L] [-f archive]\n"
+		"       %s -w [−x format] [-b blocksize] [-dtv] [-H|-L] [-f archive] [-s replstr]... \n"
 		"       %s -r -w [-d]\n\n"
 		"Options:\n",
 		program,program,program,program,program);