diff --git a/src/flash/nor/str9xpec.c b/src/flash/nor/str9xpec.c
index b618706b9..37d805344 100644
--- a/src/flash/nor/str9xpec.c
+++ b/src/flash/nor/str9xpec.c
@@ -1177,9 +1177,10 @@ static const struct command_registration str9xpec_config_command_handlers[] = {
 	},
 	{
 		.name = "part_id",
+		.usage = "<bank>",
 		.handler = str9xpec_handle_part_id_command,
 		.mode = COMMAND_EXEC,
-		.help = "print part id of str9xpec flash bank <num>",
+		.help = "print part id of str9xpec flash bank",
 	},
 	COMMAND_REGISTRATION_DONE
 };