diff --git a/README.rdoc b/README.rdoc
index 1af85f174..e856c8111 100644
--- a/README.rdoc
+++ b/README.rdoc
@@ -2,4 +2,8 @@ govuk-support
 ==============
 
 Forms that create Zendesk tickets for requests coming from government agencies. 
-The app is written in Rails and uses the zendesk_api gem to connect to Zendesk.
\ No newline at end of file
+The app is written in Rails and uses the zendesk_api gem to connect to Zendesk.
+
+To start the app:
+
+    GDS_SSO_STRATEGY=real bowl signon support