diff --git a/src/executables/uber.js b/src/executables/uber.js
index 5d1c1aa..f74d185 100644
--- a/src/executables/uber.js
+++ b/src/executables/uber.js
@@ -8,4 +8,9 @@ program.version(pkg.version)
   .description('Figure out if you should order a car to pick you up and drive you to where you want to go')
   .command('price', 'get price estimate')
   .command('time', 'get time to pickup estimate')
+  .arguments('<command>')
+  .action((cmd) => {
+    program.outputHelp();
+    console.log(`\n Unknown command ${cmd}.`);
+  }) 
   .parse(process.argv);