diff --git a/client.c b/client.c
index 18b5ea3..8fcf449 100644
--- a/client.c
+++ b/client.c
@@ -1220,15 +1220,15 @@ give_help(void)
     "add pool <name> [options]\0Add new pool of NTP servers\0"
     "add peer <name> [options]\0Add new NTP peer\0"
     "delete <address>\0Remove server or peer\0"
-    "burst <n-good>/<n-max> [<mask>/<address>]\0Start rapid set of measurements\0"
+    "burst <n-good>/<n-max> [[<mask>/]<address>]\0Start rapid set of measurements\0"
     "maxdelay <address> <delay>\0Modify maximum valid sample delay\0"
     "maxdelayratio <address> <ratio>\0Modify maximum valid delay/minimum ratio\0"
     "maxdelaydevratio <address> <ratio>\0Modify maximum valid delay/deviation ratio\0"
     "minpoll <address> <poll>\0Modify minimum polling interval\0"
     "maxpoll <address> <poll>\0Modify maximum polling interval\0"
     "minstratum <address> <stratum>\0Modify minimum stratum\0"
-    "offline [<mask>/<address>]\0Set sources in subnet to offline status\0"
-    "online [<mask>/<address>]\0Set sources in subnet to online status\0"
+    "offline [[<mask>/]<address>]\0Set sources in subnet to offline status\0"
+    "online [[<mask>/]<address>]\0Set sources in subnet to online status\0"
     "onoffline\0Set all sources to online or offline status\0"
     "\0according to network configuration\0"
     "polltarget <address> <target>\0Modify poll target\0"