diff --git a/ddclient.in b/ddclient.in
index 5cf0cf7..64ed848 100755
--- a/ddclient.in
+++ b/ddclient.in
@@ -1212,9 +1212,9 @@ my @opt = (
     "",
     ["login",             "=s", "--login=<user>         : log in to the dynamic DNS service as <user>"],
     ["password",          "=s", "--password=<secret>    : log in to the dynamic DNS service with password <secret>"],
-    ["host",              "=s", "--host=<host>          : update DNS information for <host>"],
+    ["host",              "=s", "--host=<host>[,<host>,...]\n                         : only update the given hosts.  The hosts must already be defined in the config file (see '--file') unless '--options' is also specified"],
     "",
-    ["options",           "=s", "--options=<opt>=<val>[,<opt>=<val>,...]\n                         : optional per-service arguments (see below)"],
+    ["options",           "=s", "--options=<opt>=<val>[,<opt>=<val>,...]\n                         : override settings from the config file (see '--file') with the given values.  Applies to all hosts"],
     "",
     ["ssl",               "!",  '--{no}ssl              : use encryption (TLS) when the scheme (either "http://" or "https://") is missing from a URL'],
     ["ssl_ca_dir",        "=s", "--ssl_ca_dir=<dir>     : look in <dir> for certificates of trusted certificate authorities (default: auto-detect)"],