diff --git a/contrib/gencert b/contrib/gencert
index 64dce1f..dd86b2a 100755
--- a/contrib/gencert
+++ b/contrib/gencert
@@ -27,7 +27,7 @@
 progname="$(basename -- "$0")"
 
 usage() {
-	echo "usage: $progname [-fh] [-d destdir] [-D days] hostname" >&2
+	echo "usage: $progname [-fhe] [-d destdir] [-D days] hostname" >&2
 	echo "Please read the comment at the top of $0 for the usage." >&2
 	exit $1
 }