diff --git a/src/driver/slbt_amain.c b/src/driver/slbt_amain.c
index 2e59849..65d61de 100644
--- a/src/driver/slbt_amain.c
+++ b/src/driver/slbt_amain.c
@@ -177,7 +177,7 @@ int slbt_main(char ** argv, char ** envp, const struct slbt_fd_ctx * fdctx)
 	/* driver context */
 	if ((ret = slbt_get_driver_ctx(argv,envp,flags,fdctx,&dctx)))
 		return (ret == SLBT_USAGE)
-			? !argv || !argv[0] || !argv[1]
+			? !argv || !argv[0] || !argv[1] || !argv[2]
 			: SLBT_ERROR;
 
 	if (dctx->cctx->drvflags & SLBT_DRIVER_VERSION)
diff --git a/src/driver/slbt_driver_ctx.c b/src/driver/slbt_driver_ctx.c
index f5e7ef2..ec47db8 100644
--- a/src/driver/slbt_driver_ctx.c
+++ b/src/driver/slbt_driver_ctx.c
@@ -1270,11 +1270,12 @@ int slbt_get_driver_ctx(
 			switch (entry->tag) {
 				case TAG_HELP:
 				case TAG_HELP_ALL:
-					if (flags & SLBT_DRIVER_VERBOSITY_USAGE)
-						return slbt_driver_usage(
+					return (flags & SLBT_DRIVER_VERBOSITY_USAGE)
+						? slbt_driver_usage(
 							fdctx->fdout,program,
 							entry->arg,optv,
-							meta,&sargv);
+							meta,&sargv)
+						: SLBT_USAGE;
 
 				case TAG_VERSION:
 					cctx.drvflags |= SLBT_DRIVER_VERSION;