diff --git a/lib.d/make-selfsigned-wildcard-ssl-cert.sh b/lib.d/make-selfsigned-wildcard-ssl-cert.sh
index 39735ed..ab504a3 100755
--- a/lib.d/make-selfsigned-wildcard-ssl-cert.sh
+++ b/lib.d/make-selfsigned-wildcard-ssl-cert.sh
@@ -1,12 +1,17 @@
 #!/bin/sh
-# eotk (c) 2019 Alec Muffett
+# eotk (c) 2021 Alec Muffett
 
 if [ "x$1" = "x" ] ; then
-    echo "usage: $0 foo.com [sub.foo.com ...] (wildcards are added by this script)" 1>&2
+    echo "usage: $0 prefix foo.com [sub.foo.com ...] (wildcards are added by this script)" 1>&2
     exit 1
 fi
 
-# 2019: reorganised argument parsing to accomodate `mkcert`
+
+
+
+
+
+
 
 PRIMARY="$1" # first argument = primary domain