diff --git a/README.md b/README.md
index a4593d72d..91860ca18 100644
--- a/README.md
+++ b/README.md
@@ -46,10 +46,10 @@ Pre-requisites:
     `bundle exec rails s`
 
   b. JS (for hot reloading):\
-    `yarn build mode=development --watch`
+    `yarn build --mode=development --watch`
 
 If you're not modifying front end assets you can bundle them as a one off task:\
-  `yarn build mode=development`
+  `yarn build --mode=development`
 
 Development mode will target the latest versions of Chrome, Firefox and Safari for transpilation while
 production mode will target older browsers.
@@ -58,7 +58,7 @@ The Rails server will start on <http://localhost:3000>.
 
 Running the test suite (front end assets need to be built or server needs to be running):\
   `bundle exec rspec`
-  
+
 
 ### Using Docker