diff --git a/xen/common/domctl.c b/xen/common/domctl.c
index 271862ae58..419e4070f5 100644
--- a/xen/common/domctl.c
+++ b/xen/common/domctl.c
@@ -304,7 +304,6 @@ long do_domctl(XEN_GUEST_HANDLE_PARAM(xen_domctl_t) u_domctl)
         if ( op->domain == DOMID_INVALID )
         {
     case XEN_DOMCTL_createdomain:
-    case XEN_DOMCTL_gdbsx_guestmemio:
             d = NULL;
             break;
         }