diff --git a/app/react-native/readme.md b/app/react-native/readme.md
index cb0bc0a2cef..5f2e0326dc2 100644
--- a/app/react-native/readme.md
+++ b/app/react-native/readme.md
@@ -82,7 +82,7 @@ If you are using Android and you get the following error after running the app:
 If you want to use haul instead of the react-native packager, modify the storybook npm script to:
 
 ```sh
-storybook start -p 7007 --haul webpack.haul.storybook.js
+storybook start -p 7007 --haul webpack.haul.storybook.js --platform android | ios | all
 ```
 
 Where webpack.haul.storybook.js should look something like this:
diff --git a/app/react-native/src/bin/storybook-start.js b/app/react-native/src/bin/storybook-start.js
index 95c6cea0ed3..42d2fe74e7a 100644
--- a/app/react-native/src/bin/storybook-start.js
+++ b/app/react-native/src/bin/storybook-start.js
@@ -10,6 +10,7 @@ program
   .option('-h, --host <host>', 'host to listen on')
   .option('-p, --port <port>', 'port to listen on')
   .option('--haul <configFile>', 'use haul with config file')
+  .option('--platform <ios|android|all>', 'build platform-specific build')
   .option('-s, --secured', 'whether server is running on https')
   .option('-c, --config-dir [dir-name]', 'storybook config directory')
   .option('-e, --environment [environment]', 'DEVELOPMENT/PRODUCTION environment for webpack')
@@ -76,7 +77,8 @@ if (!program.skipPackager) {
 
   let cliCommand = 'node node_modules/react-native/local-cli/cli.js start';
   if (program.haul) {
-    cliCommand = `node node_modules/.bin/haul start --config ${program.haul} --platform all`;
+    const platform = program.platform || 'all';
+    cliCommand = `node node_modules/.bin/haul start --config ${program.haul} --platform ${platform}`;
   }
   // RN packager
   shelljs.exec(