diff --git a/README.md b/README.md
index 83fc09861..f93f385af 100644
--- a/README.md
+++ b/README.md
@@ -82,7 +82,7 @@ In the root directory of the application, run:
 echo "
 export NOTIFY_ENVIRONMENT='development'
 export FLASK_APP=application.py
-export FLASK_DEBUG=1
+export FLASK_ENV=development
 export WERKZEUG_DEBUG_PIN=off
 "> environment.sh
 ```