diff --git a/lib/hx509/hxtool-commands.in b/lib/hx509/hxtool-commands.in
index a42aba452..6150355be 100644
--- a/lib/hx509/hxtool-commands.in
+++ b/lib/hx509/hxtool-commands.in
@@ -475,6 +475,11 @@ command = {
 		type = "flag"
 		help = "Issue a proxy certificate"
 	}
+	option = {
+		long = "domain-controller"
+		type = "flag"
+		help = "Issue a MS domaincontroller certificate"
+	}
 	option = {
 		long = "subject"
 		type = "string"