diff --git a/src/cli-options.js b/src/cli-options.js
index 0e7264a..e65e7d2 100644
--- a/src/cli-options.js
+++ b/src/cli-options.js
@@ -105,7 +105,7 @@ if (program.version) {
   process.exit(0)
 }
 
-if (program.help || program.h) {
+if (program.help || program.h || program['?']) {
   optimist.showHelp()
   process.exit(0)
 }