Index: /trunk/src/VBox/Frontends/VBoxManage/VBoxManageGuestCtrl.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VBoxManage/VBoxManageGuestCtrl.cpp	(revision 29584)
+++ /trunk/src/VBox/Frontends/VBoxManage/VBoxManageGuestCtrl.cpp	(revision 29585)
@@ -66,5 +66,6 @@
 {
     RTPrintf("VBoxManage guestcontrol     execute <vmname>|<uuid>\n"
-             "                            <path to program> --username <name> --password <password>\n"
+             "                            <path to program> --username <name>\n"
+             "                            [--password <password>]\n"
              "                            [--arguments \"<arguments>\"]\n"
              "                            [--environment \"<NAME>=<VALUE> [<NAME>=<VALUE>]\"]\n"