diff --git a/src/index.ts b/src/index.ts
index 48f842f..5b08b84 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -19,4 +19,5 @@ export const cli = yargs(hideBin(process.argv))
   .command(getTransactionDataCommand) // TODO: test getTransactionDataCommand and submitTxCommand
   .command(submitTxCommand)
   .demandCommand()
+  .strict()
   .help().argv;