diff --git a/openup b/openup
index a942ea7..72a9c1f 100755
--- a/openup
+++ b/openup
@@ -223,12 +223,13 @@ while getopts 'KScn' arg; do
 done
 [ $# = $(($OPTIND-1)) ] || usage
 
-check_openupd
+if [ "${checkmode}" ]; then
+	if [ -n "${nosig}" -o -n "${dryrun}" ]; then
+		usage
+	fi
+fi
 
-# XXX
-#if [ -n "${nosig}" -o -n "${dryrun}" -a -n "${dryrun}" ]; then
-#	usage
-#fi
+check_openupd
 
 if [ "${checkmode}" ]; then
 	check_vuxml