diff --git a/src/driver/ntux_driver_ctx.c b/src/driver/ntux_driver_ctx.c
index 243a729..9443ab5 100644
--- a/src/driver/ntux_driver_ctx.c
+++ b/src/driver/ntux_driver_ctx.c
@@ -302,7 +302,20 @@ int ntux_get_driver_ctx(
 			optv,0,cctx.cmd);
 
 	/* initial argv scan: ... --cmd=xxx ... */
-	for (parg=argv, cmdargv=0; *parg && !cmdargv; parg++) {
+	argv_scan(argv,optv,&ctx,0);
+
+	/* invalid ntux arguments? */
+	if (ctx.erridx && !ctx.unitidx) {
+		if (flags & NTUX_DRIVER_VERBOSITY_ERRORS)
+			argv_get(
+				argv,optv,
+				ARGV_VERBOSITY_ERRORS,
+				fdctx->fderr);
+		return -1;
+	}
+
+	/* scan for --cmd */
+	for (parg=argv, cmdargv=0; (parg<&argv[ctx.unitidx]) && !cmdargv; parg++) {
 		if (!strcmp(*parg,"--cmd") && parg[1]) {
 				cmdargv = &parg[2];
 				cmdmark = parg[2];