diff --git a/code/daisyclient/daisyclient/v1/shell.py b/code/daisyclient/daisyclient/v1/shell.py
index 2fa8986c..b8520d15 100755
--- a/code/daisyclient/daisyclient/v1/shell.py
+++ b/code/daisyclient/daisyclient/v1/shell.py
@@ -953,7 +953,7 @@ def do_service_update(gc, args):
 @utils.arg('--db-lv-size', metavar='<DB_LV_SIZE>',
            help='the size of database disk(M).')
 @utils.arg('--nova-lv-size', metavar='<NOVA_LV_SIZE>',
-           help='the size of logic volume disk for nvoa, and the unit is MB.')
+           help='the size of logic volume disk for nova, and the unit is MB.')
 @utils.arg('--disk-location', metavar='<DISK_LOCATION>',
            help='where disks used by backends from, default is "local". \
                  "local" means disks come from local host, \
@@ -1075,7 +1075,7 @@ def do_role_detail(gc, args):
 @utils.arg('--db-lv-size', metavar='<DB_LV_SIZE>',
            help='the size of database disk(M).')
 @utils.arg('--nova-lv-size', metavar='<NOVA_LV_SIZE>',
-           help='the size of logic volume disk for nvoa, and the unit is MB.')
+           help='the size of logic volume disk for nova, and the unit is MB.')
 @utils.arg('--docker-vg-size', metavar='<DOCKER_VG_SIZE>',
            help='the size of docker_vg(M).')
 @utils.arg('--disk-location', metavar='<DISK_LOCATION>',