diff --git a/README.md b/README.md
index 2dfe0a9244dceef129b3c95b155fcc5c17988c21..f389c4eb5dbf2e116026205eb08a2b4c7c562422 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,6 @@ $ pip install -r requirement.txt
 
 Setup environment variables
 ```shell
-$ export FLASK_CONFIG=development
 $ export FLASK_ENV=development
 $ export FLASK_APP=run.py
 ```